Programme for International Student Assessment

"PISA" redirects here. For other uses, see Pisa (disambiguation).

Programme for International Student Assessment
Abbreviation	PISA
Formation	1997
Purpose/focus	Comparison of education attainment across the world
Headquarters	OECD Headquarters
Location	2 rue André Pascal, 75775 Paris Cedex 16
Region served	World
Membership	59 government education departments
Head of the Indicators and Analysis Division	Andreas Schleicher
Main organ	PISA Governing Body (Chair - Lorna Bertrand, England)
Parent organization	OECD
Website	PISA

The Programme for International Student Assessment (PISA) is a worldwide study by the Organisation for Economic Co-operation and Development (OECD) in member and non-member nations of 15-year-old school pupils' scholastic performance on mathematics, science, and reading. It was first performed in 2000 and then repeated every three years. It is done with view to improving educational policies and outcomes. The data have increasingly been used both to assess the impact of educational quality on incomes and growth and to understand what causes differences in achievement across nations.

470,000 15-years-old students representing 65 nations and territories participated in PISA 2009. An additional 50,000 students representing 9 nations were tested in 2010.

The Trends in International Mathematics and Science Study (TIMSS) and the Progress in International Reading Literacy Study (PIRLS) by the International Association for the Evaluation of Educational Achievement are similar studies.

Framework

PISA stands in a tradition of international school studies, undertaken since the late 1950s by the International Association for the Evaluation of Educational Achievement (IEA). Much of PISA's methodology follows the example of the Trends in International Mathematics and Science Study (TIMSS, started in 1995), which in turn was much influenced by the U.S. National Assessment of Educational Progress (NAEP). The reading component of PISA is inspired by the IEA's Progress in International Reading Literacy Study (PIRLS).

PISA aims at testing literacy in three competence fields: reading, mathematics, science.

The PISA mathematics literacy test asks students to apply their mathematical knowledge to solve problems set in various real-world contexts. To solve the problems students must activate a number of mathematical competencies as well as a broad range of mathematical content knowledge. TIMSS, on the other hand, measures more traditional classroom content such as an understanding of fractions and decimals and the relationship between them (curriculum attainment). PISA claims to measure education's application to real-life problems and life-long learning (workforce knowledge).

In the reading test, "OECD/PISA does not measure the extent to which 15-year-old students are fluent readers or how competent they are at word recognition tasks or spelling". Instead, they should be able to "construct, extend and reflect on the meaning of what they have read across a wide range of continuous and non-continuous texts"

Development and implementation

Developed from 1997, the first PISA assessment was carried out in 2000. The results of each period of assessment take about one year and half to be analysed. First results were published in November 2001. The release of raw data and the publication of technical report and data handbook took only place in spring 2002. The triennial repeats follow a similar schedule; the process of seeing through a single PISA cycle, start-to-finish, always takes over four years.

Every period of assessment focusses on one of the three competence fields reading, math, science; but the two others are tested as well. After nine years, a full cycle is completed: after 2000, reading is again the main domain in 2009.

Period	Main focus	# OECD countries	# other countries	# students	Notes
2000	Reading	28	4	265,000	The Netherlands disqualified from data analysis. 11 additional non-OECD countries took the test in 2002
2003	Mathematics	30	11	275,000	UK disqualified from data analysis. Also included test in problem solving.
2006	Science	30	27
2009	Reading	34	33?		Results made available on 7 December 2010

PISA is sponsored, governed, and coordinated by the OECD. The test design, implementation, and data analysis is delegated to an international consortium of research and educational institutions led by the Australian Council for Educational Research (ACER). ACER leads in developing and implementing sampling procedures and assisting with monitoring sampling outcomes across these countries. The assessment instruments fundamental to PISA's Reading, Mathematics, Science, Problem-solving, Computer-based testing, background and contextual questionnaires are similarly constructed and refined by ACER. ACER also develops purpose-built software to assist in sampling and data capture, and analyses all data. The source code of the data analysis software is not made public.

Method of testing

Sampling

The students tested by PISA are aged between 15 years and 3 months and 16 years and 2 months at the beginning of the assessment period. The school year pupils are in is not taken into consideration. Only students at school are tested, not home-schoolers. In PISA 2006, however, several countries also used a grade-based sample of students. This made it possible also to study how age and school year interact.

To fulfill OECD requirements, each country must draw a sample of at least 5,000 students. In small countries like Iceland and Luxembourg, where there are less than 5,000 students per year, an entire age cohort is tested. Some countries used much larger samples than required to allow comparisons between regions.

The test

PISA test documents on a school table (Neues Gymnasium, Oldenburg, Germany, 2006)

Each student takes a two-hour handwritten test. Part of the test is multiple-choice and part involves fuller answers. In total there are six and a half hours of assessment material, but each student is not tested on all the parts. Following the cognitive test, participating students spend nearly one more hour answering a questionnaire on their background including learning habits, motivation and family. School directors also fill in a questionnaire describing school demographics, funding etc.

In selected countries, PISA started also experimentation with computer adaptive testing.

National add-ons

Countries are allowed to combine PISA with complementary national tests.

Germany does this in a very extensive way: on the day following the international test, students take a national test called PISA-E (E=Ergänzung=complement). Test items of PISA-E are closer to TIMSS than to PISA. While only about 5,000 German students participate in both the international and the national test, another 45,000 take only the latter. This large sample is needed to allow an analysis by federal states. Following a clash about the interpretation of 2006 results, the OECD warned Germany that it might withdraw the right to use the "PISA" label for national tests.

Data Scaling

From the beginning, PISA has been designed with one particular method of data analysis in mind. Since students work on different test booklets, raw scores must be scaled to allow meaningful comparisons. This scaling is done using the Rasch model of item response theory (IRT). According to IRT, it is not possible to assess the competence of students who solved none or all of the test items. This problem is circumvented by imposing a Gaussian prior probability distribution of competences.

One and the same scale is used to express item difficulties and student competences. The scaling procedure is tuned such that the a posteriori distribution of student competences, with equal weight given to all OECD countries, has mean 500 and standard deviation 100.

Results

The official reports only contain domain-specific scores and do not combine the different domains into an overall score. The final scoring is adjusted so that the OECD average in each domain is 500 and the standard deviation is 100.

Historical tables

All PISA results are broken down by countries. Public attention concentrates on just one outcome: achievement mean values by countries. These data are regularly published in form of "league tables".^{citation needed}

The following table gives the mean achievements of OECD member countries in the principal testing domain of each period:

In the official reports, country rankings are communicated in a more elaborate form: not as lists, but as cross tables, indicating for each pair of countries whether or not mean score differences are statistically significant (unlikely to be due to random fluctuations in student sampling or in item functioning). In favorable cases, a difference of 9 points is sufficient to be considered significant.^{citation needed}

In some popular media, test results from all three literacy domains have been consolidated in an overall country ranking. Such meta-analysis is not endorsed by the OECD. The official reports only contain domain-specific country scores. In part of the official reports, however, scores from a period's principal testing domain are used as proxy for overall student ability.

2000–2006

Top results for the main areas of investigation of PISA, in 2000, 2003 and 2006.

2000[3]	2003	2006
Reading literacy	Mathematics	Science
1. Finland 546 2. Canada 534 3. New Zealand 529 4. Australia 528 5. Ireland 527 6. South Korea 525 7. United Kingdom 523 8. Japan 522 9. Sweden 516 10. Austria 507 11. Belgium 507 12. Iceland 507 13. Norway 505 14. France 505 15. United States 504 16. Denmark 497 17. Switzerland 494 18. Spain 493 19. Czech Republic 492 20. Italy 487 21. Germany 484 22. Hungary 480 23. Poland 479 24. Greece 474 25. Portugal 470 26. Luxembourg 441 27. Russia 462 28. Latvia 458 29. Mexico 422 30. Brazil 396	1. Finland 544 2. South Korea 542 3. Netherlands 538 4. Japan 534 5. Canada 532 6. Belgium 529 7. Switzerland 527 8. Australia 524 9. New Zealand 523 10. Czech Republic 516 11. Iceland 515 12. Denmark 514 13. France 511 14. Sweden 503 15. Austria 506 16. Germany 503 17. Ireland 503 18. Slovakia 498 19. Norway 495 20. Luxembourg 493 21. Poland 490 22. Hungary 490 23. Spain 485 24. United States 483 25. Italy 466 26. Portugal 466 27. Greece 445 28. Turkey 423 29. Mexico 385	1. Finland 563 2. Canada 534 3. Japan 531 4. New Zealand 530 5. Australia 527 6. Netherlands 525 7. South Korea 522 8. Germany 516 9. United Kingdom 515 10. Czech Republic 513 11. Switzerland 512 12. Austria 511 13. Belgium 510 14. Ireland 508 15. Hungary 504 16. Sweden 503 17. Poland 498 18. Denmark 496 19. France 495 20. Iceland 491 21. United States 489 22. Slovakia 488 23. Spain 488 24. Norway 487 25. Luxembourg 486 26. Italy 475 27. Portugal 474 28. Greece 473 29. Turkey 424 30. Mexico 410

2006

Top 10 countries for Pisa 2006 results in Math, Sciences and Reading.

Programme for International Student Assessment (2006) (OECD member countries in boldface)
Maths	Sciences	Reading
1. Taiwan 549 2. Finland 548 3. Hong Kong 547 3. South Korea 547 5. Netherlands 531 6. Switzerland 530 7. Canada 527 8. Macau 525 8. Liechtenstein 525 10. Japan 523	1. Finland 563 2. Hong Kong 542 3. Canada 534 4. Taiwan 532 5. Estonia 531 5. Japan 531 7. New Zealand 530 8. Australia 527 9. Netherlands 525 10. Liechtenstein 522	1. South Korea 556 2. Finland 547 3. Hong Kong 536 4. Canada 527 5. New Zealand 521 6. Ireland 517 7. Australia 513 8. Liechtenstein 510 9. Poland 508 10. Sweden 507

2009

Top 30 countries for Pisa 2009 results in Maths, Sciences and Reading. For a complete list, see [4].

Programme for International Student Assessment (2009) (OECD members as of the time of the study in boldface) For complete list, see [5]
Maths	Sciences	Reading
1. Shanghai, China 600 2. Singapore 562 3. Hong Kong, China 555 4. South Korea 546 5. Taiwan 543 6. Finland 541 7. Liechtenstein 536 8. Switzerland 534 9. Japan 529 10. Canada 527 11. Netherlands 526 12. Macau, China 525 13. New Zealand 519 14. Belgium 515 15. Australia 514 16. Germany 513 17. Estonia 512 18. Iceland 507 19. Denmark 503 20. Slovenia 501 21. Norway 498 22. France 497 23. Slovakia 497 24. Austria 496 25. Poland 495 26. Sweden 494 27. Czech Republic 493 28. United Kingdom 492 29. Hungary 490 30. United States 487 : 65. Kyrgyzstan 331	1. Shanghai, China 575 2. Finland 554 3. Hong Kong, China 549 4. Singapore 542 5. Japan 539 6. South Korea 538 7. New Zealand 532 8. Canada 529 9. Estonia 528 10. Australia 527 11. Netherlands 522 12. Liechtenstein 520 13. Germany 520 14. Taiwan 520 15. Switzerland 517 16. United Kingdom 514 17. Slovenia 512 18. Macau, China 511 19. Poland 508 20. Ireland 508 21. Belgium 507 22. Hungary 503 23. United States 502 24. Norway 500 25. Czech Republic 500 26. Denmark 499 27. France 498 28. Iceland 496 29. Sweden 495 30. Latvia 494 : 65. Kyrgyzstan 330	1. Shanghai, China 556 2. South Korea 539 3. Finland 536 4. Hong Kong, China 533 5. Singapore 526 6. Canada 524 7. New Zealand 521 8. Japan 520 9. Australia 515 10. Netherlands 508 11. Belgium 506 12. Norway 503 13. Estonia 501 14. Switzerland 501 15. Poland 500 16. Iceland 500 17. United States 500 18. Liechtenstein 499 19. Sweden 497 20. Germany 497 21. Ireland 496 22. France 496 23. Taiwan 495 24. Denmark 495 25. United Kingdom 494 26. Hungary 494 27. Portugal 489 28. Macau, China 487 29. Italy 486 30. Latvia 484 : 65 Kyrgyzstan 314

PISA 2009 Mathematics results.

PISA 2009 Science results.

PISA 2009 Reading results.

PISA 2009 mathematics results. Dark blue nations scored statistically significantly above the OECD average. Intermediate blue nations not statistically significantly different from the OECD average. Light blue nations statistically significantly below the OECD average. For some nations (China, India, Venezuela) only students from limited areas were tested as indicated in the map.

Pisa 2009+

An additional group of ten economies were tested in 2010 after the main group of 65. These were (with mean maths, sciences, and reading scores):

• Costa Rica 409,430,443
• Georgia 379,373,374
• India-Himachal Pradesh 338,325,317
• India-Tamil Nadu 351,348,337
• Malaysia 404,422,414
• Malta 463,461,442
• Mauritius 420,417,407
• Miranda-Venezuela 397,422,422
• Moldova 397,413,388
• The United Arab Emirates 421,438,431

Reaction in India

Of the 74 countries tested in the PISA 2009 cycle including the "+" nations, the two Indian states came up 72nd and 73d out of 74 in both reading and maths. The two Indian states were 73rd and 74th in science. This poor result has focused media attention in India on its poor educational system. The BBC reported that as of 2008, only the top 15% of India's students reach high school. The Times of India described Tamil Nadu and Himachal as "showpieces of India's education and development", yet still with score that are the worst in the world.

Comparison with other studies

The correlation between PISA 2003 and TIMSS 2003 grade 8 country means is 0.84 in mathematics, 0.95 in science. The values go down to 0.66 and 0.79 if the two worst performing developing countries are excluded. Correlations between different scales and studies are around 0.80. The high correlations between different scales and studies indicate common causes of country differences (e.g. educational quality, culture, wealth or genes) or a homogenous underlying factor of cognitive competence. Western countries perform slightly better in PISA; Eastern European and Asian countries in TIMSS. Content balance and years of schooling explain most of the variation.

Topical studies

An evaluation of the 2003 results showed that countries that spent more on education did not necessarily do better. Australia, Belgium, Canada, the Czech Republic, Finland, Japan, South Korea, New Zealand and the Netherlands spent less but did relatively well, whereas the United States spent much more but was below the OECD average. The Czech Republic, in the top ten, spent only one third as much per student as the United States did, for example, but the USA came 24th out of 29 countries compared.^{citation needed}

Another point made in the evaluation was that students with higher-earning parents are better-educated and tend to achieve higher results. This was true in all the countries tested, although more obvious in certain countries, such as Germany.^{citation needed}

It has been suggested that the Finnish language plays an important part in Finland's PISA success.

International testing, including both PISA and TIMSS, has been a central part of many recent analyses of how cognitive skills relate to economic outcomes. These studies consider both individual earnings and aggregate growth differences of nations.

In 2010, the 2009 Program for International Student Assessment (PISA) results revealed that Shanghai students scored the highest in the world in every category (Math, Reading and Science). The OECD described Shanghai as a pioneer of educational reform, noting that "there has been a sea change in pedagogy". OECD point out that they "abandoned their focus on educating a small elite, and instead worked to construct a more inclusive system. They also significantly increased teacher pay and training, reducing the emphasis on rote learning and focusing classroom activities on problem solving."

According to the Financial Times: The OECD noted that even in rural China results approached average levels for the OECD countries:"Citing further, as-yet unpublished OECD research, Mr Schleicher said: “We have actually done Pisa in 12 of the provinces in China. Even in some of the very poor areas you get performance close to the OECD average. For a developing country, China’s 99.4% enrolment in primary education is already, as the OECD puts it, “the envy of many countries” while junior secondary school participation rates in China are now 99%. But in Shanghai not only has senior secondary school enrolment attained 98% but admissions into higher education have achieved 80% of the relevant age group. That this growth reflects quality, not just quantity, is confirmed clearly by the OECD’s ranking of Shanghai’s secondary education as world number one.According to OECD, China has also expanded school access, and moved away from learning by rote. “The last point is key: Russia performs well in rote-based assessments, but not in Pisa, says Schleicher, head of the indicators and analysis division at the OECD’s directorate for education. China does well in both rote-based and broader assessments.

Reception

For many countries, the first PISA results were surprising. In Germany and the United States, for example, the comparatively low scores brought on heated debate about how the school system should be changed.^{citation needed} Some headlines in national newspapers, for example, were:

• "La France, élève moyen de la classe OCDE" (France, average student of the OECD class) Le Monde, December 5, 2001
• "Miserable Noten für deutsche Schüler" (Abysmal marks for German students) Frankfurter Allgemeine Zeitung, December 4, 2001
• "Are we not such dunces after all?" The Times, United Kingdom, December 6, 2001
• "Economic Time Bomb: U.S. Teens Are Among Worst at Math" Wall Street Journal December 7, 2004
• "Preocupe-se. Seu filho é mal educado." (Be worried. Your child is badly educated.) Veja November 7, 2007
• "La educación española retrocede" (Spanish education moving backwards) El País December 5, 2007
• "Finnish teens score high marks in latest PISA study" Helsingin Sanomat November 30, 2007

The results from PISA 2003 and PISA 2006 were featured in the 2010 documentary Waiting for "Superman".

Research on causes of country differences

PISA, TIMSS and PIRLS, their organizers and researchers, are restrained in giving reasons for the large and stable country differences. Cautiously they leave this task to other researchers, especially from the economic sciences and psychology. Economic researchers studied single educational policy factors like central exams (John Bishop), private schools or streaming between schools at later age (Hanushek/Woessman). An extensive literature related to cross-countries difference in scores has developed since 2000.

The stable, good results of Finland have attracted a lot of attention. According to Hannu Simola the results are due to a paradoxical mix of progressive policies implemented through a rather conservative pedagogic setting, where the high levels of teachers` academic preparation, social status, professionalism and motivation for the job are concomitant with the adherence to traditional roles and methods by both teachers and pupils in Finland`s changing, but still rather authoritarian culture. Others have suggested that Finland's low poverty rate is a reason for its success. It has been suggested that the Finnish language plays an important part in Finland's PISA success.

Lynn and Meisenberg (2010) found very high correlations (r>0.90) between mean student assessment results from PISA, TIMSS, PIRLS and others and IQ measurements at the country data level.

Heiner Rindermann and Stephen Ceci in a review state that studies have found that student achievement is related to many outcomes important to society such as democratization, health, and productivity. Thus, reducing the gap between nations in student achievement may also reduce the gap between nations on these outcomes. They argue that differences in educational systems can explain a part of the differences in student achievement. They "document a number of positive predictors of international differences in student competence, including the amount of preschool education, student discipline, quantity of education, attendance at additional schools, early tracking, the use of centralized exams and high-stakes tests, and adult educational attainment. We found rather negative relationships for grade retention rates, age of school onset, and class size."

Criticism

United States

Critics, such as Mel Riddile of the NASSP say that low performance in the United States is closely related to American poverty, but the same reasoning applies to other countries. Riddile also shown that when adjusted for poverty, the richest areas in the US, especially areas with less than 10% poverty can perform an average PISA score of 551 (higher than any other country).

The table below summarizes the scores of American schools by their relative OECD poverty rates and compares them to countries with similar poverty rates. It should be noted that the poverty rates here are based on relative poverty, not absolute poverty as defined by a single standard.

Country	Poverty Rate	PISA score
United States	< 10%	551
Finland	3.4%	536
Netherlands	9.0%	508
Belgium	6.7%	506
Switzerland	6.8%	501
United States	10%–24.9%	527
Canada	13.6%	524
New Zealand	16.3%	521
Japan	14.3%	520
Australia	11.6%	515
United States	25–49.9%	502
Estonia		501
Poland	14.5%	500
United States	50–74.9%	471
Austria	13.3%	471
Turkey		464
Chile		449
United States	> 75%	446
Mexico		425
NASSP

Performance of U.S. states in international comparisons

Two studies have compared high achievers in mathematics on the PISA and the U.S. National Assessment of Educational Progress (NAEP). Comparisons were made between those scoring at the "advanced" and "proficient" levels in mathematics on the NAEP with the corresponding performance on the PISA. Overall, 30 nations had higher percentages than the U.S. of students at the "advanced" level of mathematics. The only OECD countries with worse results were Portugal, Greece, Turkey, and Mexico. Six percent of U.S. students were "advanced" in mathematics compared to 28 percent in Taiwan. The highest ranked state in the U.S. (Massachusetts) was just 15th in the world if it was compared with the nations participating in the PISA. 31 nations had higher percentages of "proficient" students than the U.S. Massachusetts was again the best U.S. state, but it ranked just ninth in the world if compared with the nations participating in the PISA.

Comparisons with results for the Trends in International Mathematics and Science Study (TIMSS) appear to give different results—suggesting that the U.S. states actually do better in world rankings. The difference in apparent rankings is, however, almost entirely accounted for by the sampling of countries. PISA includes all of the OECD countries, while TIMSS is much more weighted in its sampling toward developing countries.

China

Education professor Yong Zhao has said the high scores in China are due to an excessive workload and testing, and added that it's "no news that the Chinese education system is excellent in preparing outstanding test takers, just like other education systems within the Confucian cultural circle—Singapore, Korea, Japan, and Hong Kong." Zhao also noted that most major Chinese media outlets did not pay much attention to this story. Others have criticized Shanghai for being sampled on the test instead of the country at large and say that it's an outlier among China and that most of the country has a lower quality of education.

Portugal

According to OECD's PISA, the average Portuguese 15-years old student was for many years underrated and underachieving in terms of reading literacy, mathematics and science knowledge in the OECD, nearly tied with the Italian and just above those from countries like Greece, Turkey and Mexico. However, since 2010, PISA results for Portuguese students improved dramatically. The Portuguese Ministry of Education announced a 2010 report published by its office for educational evaluation GAVE (Gabinete de Avaliação do Ministério da Educação) which criticized the results of PISA 2009 report and claimed that the average Portuguese teenage student had profund handicaps in terms of expression, communication and logic, as well as a low performance when asked to solve problems. They also claimed that those fallacies are not exclusive of Portugal but indeed occur in other countries due to the way PISA was designed.

See also

• Teaching And Learning International Survey (TALIS)
• Trends in International Mathematics and Science Study (TIMSS)

Further reading

Official websites and reports

• OECD/PISA website (Javascript required)
  • OECD (1999): Measuring Student Knowledge and Skills. A New Framework for Assessment. Paris: OECD, ISBN 92-64-17053-7 [6]
  • OECD (2001): Knowledge and Skills for Life. First Results from the OECD Programme for International Student Assessment (PISA) 2000.
  • OECD (2003a): The PISA 2003 Assessment Framework. Mathematics, Reading, Science and Problem Solving Knowledge and Skills. Paris: OECD, ISBN 978-92-64-10172-2 [7]
  • OECD (2004a): Learning for Tomorrow's World. First Results from PISA 2003. Paris: OECD, ISBN 978-92-64-00724-6 [8]
  • OECD (2004b): Problem Solving for Tomorrow's World. First Measures of Cross-Curricular Competencies from PISA 2003. Paris: OECD, ISBN 978-92-64-00642-3
  • OECD (2005): PISA 2003 Technical Report. Paris: OECD, ISBN 978-92-64-01053-6
  • OECD (2007): Science Competencies for Tomorrow's World: Results from PISA 2006 [9]

About reception and political consequences

• General:
  • A. P. Jakobi, K. Martens: Diffusion durch internationale Organisationen: Die Bildungspolitik der OECD. In: K. Holzinger, H. Jörgens, C. Knill: Transfer, Diffusion und Konvergenz von Politiken. VS Verlag für Sozialwissenschaften, 2007.

• France:
  • N. Mons, X. Pons: The reception and use of Pisa in France.
• Germany:
  • E. Bulmahn [then federal secretary of education]: PISA: the consequences for Germany. OECD observer, no. 231/232, May 2002. pp. 33–34.
  • H. Ertl: Educational Standards and the Changing Discourse on Education: The Reception and Consequences of the PISA Study in Germany. Oxford Review of Education, v 32 n 5 pp 619–634 Nov 2006.
• United Kingdom:
  • S. Grek, M. Lawn, J. Ozga: Study on the Use and Circulation of PISA in Scotland. [10]

Criticism

• Books:
  • S. Hopmann, G. Brinek, M. Retzl (eds.): PISA zufolge PISA. PISA According to PISA. LIT-Verlag, Wien 2007, ISBN 3-8258-0946-3 (partly in German, partly in English)
  • T. Jahnke, W. Meyerhöfer (eds.): PISA & Co – Kritik eines Programms. Franzbecker, Hildesheim 2007 (2nd edn.), ISBN 978-3-88120-464-4 (in German)
  • R. Münch: Globale Eliten, lokale Autoritäten: Bildung und Wissenschaft unter dem Regime von PISA, McKinsey & Co. Frankfurt am Main : Suhrkamp, 2009. ISBN 978-3-518-12560-1 (in German)
• Websites:
  • J . Wuttke: Critical online bibliography
  • Correlation of 2009-PISA Scores with National GDP PISA versus GDP

External links

• PISA
• Interactive world map of PISA results

Video clips

• Andreas Schleicher