Average 2022 results were about the same as in 2018 in mathematics, reading and science.

When considering the results of all PISA assessments, the most recent results are below the average scores observed in mathematics and reading between 2003 and 2012, but close to those observed in science during the same period.

Over the most recent period (2018 to 2022), the gap between the highest-scoring students (10% with the highest scores) and the weakest students (10% with the lowest scores) did not change significantly in mathematics, reading and science. In mathematics, performance remained close to prior levels for both high- and low-achievers.

Compared to 2012 the proportion of students scoring below a baseline level of proficiency (Level 2) increased by seven percentage points in mathematics; by seven percentage points in reading; and by seven percentage points in science.

Students in Korea scored higher than the OECD average in mathematics, reading and science.

More students in Korea, than on average across OECD countries, were top performers (Level 5 or 6) in at least one subject. At the same time a larger proportion of students than on average across OECD countries achieved a minimum level of proficiency (Level 2 or higher) in all three subjects.

In Korea, 84% of students attained at least Level 2 proficiency in mathematics, significantly more than on average across OECD countries (OECD average: 69%). At a minimum, these students can interpret and recognize, without direct instructions, how a simple situation can be represented mathematically (e.g. comparing the total distance across two alternative routes, or converting prices into a different currency). Over 85% of students in Singapore, Macao (China), Japan, Hong Kong (China)*, Chinese Taipei and Estonia (in descending order of that share) performed at this level or above.

Some 23% of students in Korea were top performers in mathematics, meaning that they attained Level 5 or 6 in the PISA mathematics test (OECD average: 9%). Six Asian countries and economies had the largest shares of students who did so: Singapore (41%), Chinese Taipei (32%), Macao (China) (29%), Hong Kong (China)* (27%), Japan (23%) and Korea (23%). At these levels, students can model complex situations mathematically, and can select, compare and evaluate appropriate problem-solving strategies for dealing with them. Only in 16 out of 81 countries and economies participating in PISA 2022 did more than 10% of students attain Level 5 or 6 proficiency.

Some 85% of students in Korea attained Level 2 or higher in reading (OECD average: 74%). At a minimum, these students can identify the main idea in a text of moderate length, find information based on explicit, though sometimes complex criteria, and can reflect on the purpose and form of texts when explicitly directed to do so. The share of 15-year-old students who attained minimum levels of proficiency in reading (Level 2 or higher) varied from 89% in Singapore to 8% in Cambodia.

In Korea, 13% of students scored at Level 5 or higher in reading (OECD average: 7%). These students can comprehend lengthy texts, deal with concepts that are abstract or counterintuitive, and establish distinctions between fact and opinion, based on implicit cues pertaining to the content or source of the information.

Some 86% of students in Korea attained Level 2 or higher in science (OECD average: 76%). At a minimum, these students can recognize the correct explanation for familiar scientific phenomena and can use such knowledge to identify, in simple cases, whether a conclusion is valid based on the data provided.

In Korea, 16% of students were top performers in science, meaning that they were proficient at Level 5 or 6 (OECD average: 7%). These students can creatively and autonomously apply their knowledge of and about science to a wide variety of situations, including unfamiliar ones.

The PISA index of economic, social and cultural status is computed in such a way that all students taking the PISA test, regardless of the country where they live, can be placed on the same socio-economic scale. This means that it is possible to use this index to compare the performance of students of similar socio-economic background in different countries. In Korea, 41% of students (the largest share) were in the top international quintile of the socio-economic scale, meaning that they were among the most advantaged students who took the PISA test in 2022. Their average score in mathematics was 564 score points; one of the highest for students of similar socio-economic background.

The PISA index of economic, social and cultural status can also be used to order students from the most disadvantaged to the most advantaged within each country and economy, and to create four groups of students of equal size (each comprising 25% of the population of 15-year-old students in each country/economy). In Korea socio-economically advantaged students (the top 25% in terms of socio-economic status) outperformed disadvantaged students (the bottom 25%) by 97 score points in mathematics. This is similar to the average difference between the two groups (93 score points) across OECD countries.

Between 2012 and 2022, the gap in mathematics performance between the top and the bottom 25% of students in terms of socio-economic status remained stable in Korea, as well as across OECD countries on average.

Socio-economic status was a predictor of performance in mathematics in all PISA participating countries and economies. It accounted for 13% of the variation in mathematics performance in PISA 2022 in Korea (compared to 15% on average across OECD countries).

Some 11% of disadvantaged students in Korea were able to score in the top quarter of mathematics performance. These students can be considered academically resilient because, despite their socio-economic disadvantage, they have attained educational excellence by comparison with students in their own country. On average across OECD countries, 10% of disadvantaged students scored in the top quarter of mathematics performance in their own countries.

Boys and girls performed at similar levels on average in mathematics but girls outperformed boys in reading by 34 score points in Korea. Globally, in mathematics, boys outperformed girls in 40 countries and economies, girls outperformed boys in another 17 countries or economies, and no significant difference was found in the remaining 24. In reading, girls, on average, scored above boys in all but two countries and economies that participated in PISA 2022 (79 out of 81).

In Korea, the share of low performers is similar among boys (18%) and girls (15%) in mathematics; in reading, however, the share is larger among boys (10% of girls and 19% of boys scored below Level 2 in reading). When it comes to top performers, the share is larger among boys (26%) than among girls (19%) in mathematics; in reading, however, the share is larger among girls (16% of girls and 11% of boys scored at Level 5 or 6 in reading).

Between 2012 and 2022, performance in mathematics declined to a similar extent among boys and girls in Korea.

In 2022, 78% of students in Korea reported that they make friends easily at school (OECD average: 76%) and 79% felt that they belong at school (OECD average: 75%). Meanwhile, 9% reported feeling lonely at school, and 9% like an outsider or left out of things at school (OECD average: 16% and 17%). Compared to 2018, students’ sense of belonging at school did not change significantly in Korea.

Students’ satisfaction with life, more generally, declined in many countries and economies over recent years. In 2022, 22% of students in Korea reported that they were not satisfied with their lives: they rated their satisfaction with life between 0 and 4 on a scale ranging from 0 to 10. In 2018, about the same number of students were not satisfied with life (23%). On average across OECD countries, the proportion of students who are not satisfied with life increased from 11% in 2015 to 16% in 2018 and 18% in 2022.

In Korea, 72% of students reported that, in most mathematics lessons, the teacher shows an interest in every student’s learning (OECD average: 63%), and 75% that the teacher gives extra help when students need it (OECD average: 70%). In 2012, the corresponding shares were 63% and 70%. Mathematics results in 2022 tended to decline less, on average, in education systems where more students reported that teachers give extra help when students need it, compared to ten years earlier.

A small number of students study mathematics in a disciplinary climate that is not favourable to learning: in 2022, about 9% of students in Korea reported that they cannot work well in most or all lessons (OECD average: 23%); 7% of students do not listen to what the teacher says (OECD average: 30%); 9% of students get distracted using digital devices (OECD average: 30%); and 9% get distracted by other students who are using digital devices (OECD average: 25%). On average across OECD countries, students were less likely to report getting distracted using digital devices when the use of cell phones on school premises is banned.

PISA 2022 data show that in education systems where performance remained high and students’ sense of belonging improved, students tended to feel safer and less exposed to bullying and other risks at their school.

In Korea, 5% of students reported not feeling safe on their way to school (OECD average: 8%); 4% of students reported not feeling safe in their classrooms at school (OECD average: 7%); 10% of students reported not feeling safe at other places at school (e.g. hallway, cafeteria, restroom) (OECD average: 10%).

Some 8% of girls and 10% of boys reported being the victim of bullying acts at least a few times a month (OECD average: 20% of girls and 21% of boys). On average across OECD countries, fewer students were exposed to bullying in 2022 compared to 2018: for example, only 7% of students reported that other students spread nasty rumours about them in 2022, compared to 11% in 2018. In Korea, in contrast, the corresponding proportions remained stable (2% in 2022 compared to 2% in 2018).

PISA data collected from school principals show that the percentage of parents who were involved in school and learning decreased substantially between 2018 and 2022 in many countries/economies. This was not the case in Korea. In 2022, 31% of students in Korea were in schools whose principal reported that during the previous academic year at least half of all families discussed their child’s progress with a teacher on their own initiative (and 40% on the teacher’s initiative). In 2018, the corresponding number was 36% (and 42%). Systems that had more positive trends in parental involvement between 2018 and 2022 (i.e. systems in which the share of parents who discussed their child’s progress with a teacher on their own initiative shrank less) tended to show more stable or improved performance in mathematics.

In Korea, 21% of students reported that their school building was closed for more than three months due to COVID-19. On average across OECD countries, 51% of students experienced similarly long school closures. In education systems where performance remained high and students’ sense of belonging improved, fewer students experienced longer school closures.

During remote learning, 25% of students in Korea had problems at least once a week with understanding school assignments and 19% of students with finding someone who could help them with schoolwork (OECD averages: 34% and 24%). In education systems where performance remained high and students’ sense of belonging improved, fewer students encountered problems during remote learning.

Support for students’ well-being was often limited when their schools were closed. In Korea, 55% of students reported that they were supported daily through live virtual classes on a video communication program. Only 7% of students reported that they were asked daily, by someone from the school, how they were feeling (OECD averages: 51% and 13%).

If school buildings have to close again in the future, many students across the OECD feel confident about using digital technology for learning remotely but fewer students feel confident about taking responsibility for their own learning. Some 70% of students in Korea feel confident or very confident about using a video communication program and 57% of students feel confident or very confident about motivating themselves to do school work (OECD averages: 77% and 58%).

Expenditure on education is related to student performance only to a certain extent. Among the countries/economies whose cumulative expenditure per student, over all primary and secondary school years between the ages of 6 and 15, was under USD 75 000 (PPP) in 2019, higher expenditure on education was associated with higher scores in the PISA mathematics test. But this was not the case among countries/economies whose cumulative expenditure was greater than USD 75 000 (PPP). For this latter group of countries/economies, the ways in which financial resources are used seems to matter more for student performance than the level of investment in education. In Korea, the cumulative expenditure per student, over ten years of age between 6 and 15, was equivalent to about USD 144 500 (PPP).

In about half of all countries/economies with comparable data, school principals in 2022 were more likely than their counterparts in 2018 to report a shortage of teaching staff. This was also the case in Korea. In 2022, 51% of students in Korea were in schools whose principal reported that the school’s capacity to provide instruction is hindered by a lack of teaching staff (and 16%, by inadequate or poorly qualified teaching staff). In 2018, the corresponding proportions were 33% and 17%. In most countries/economies, students attending schools whose principal reported shortages of teaching staff scored lower in mathematics than students in schools whose principal reported fewer or no shortages of teaching staff.

When they sat the PISA test in 2022, 80% of 15-year-old students in Korea were enrolled in 10th grade.

In Korea, 96% reported that they had attended pre-primary education for one year or more (OECD average: 94%). On average across OECD countries, students who had attended pre-primary education for one year or more scored higher in mathematics at the age of 15 than students who never attended or who had attended for less than one year, even after accounting for socio-economic factors.

Some 3% of students in Korea reported that they had repeated a grade at least once (OECD average: 9%) after entering primary school. Grade repetition tends to be less prevalent in high performing systems.

In Korea, 41% of students attended a school where principals had the main responsibility for hiring teachers (OECD average: 60%), and 76% were enrolled in a school where teachers had the main responsibility for choosing which learning materials are used (OECD average: 76%). Many high-performing school systems tend to entrust principals and teachers with these responsibilities.

The PISA 2022 survey focused on mathematics, with reading and science as minor areas and creative thinking as the innovative area of assessment. PISA 2022 also included an assessment of young people’s financial literacy, which was optional for countries and economies. Results for mathematics, reading and science are released on 5 December 2023 and results for creative thinking and financial literacy in 2024.

Some 690 000 students took the assessment in 2022, representing about 29 million 15-year-olds in the schools of the 81 participating countries and economies.

In Korea, 6454 students, in 186 schools, completed the assessment in mathematics, reading or science, representing about 428 000 15-year-old students (an estimated 100% of the total population of 15-year-olds).

Students took two hour-long tests, each devoted to one subject. Different students were given different test questions and different combinations of subjects (e.g. mathematics followed by reading, or science followed by mathematics, etc.). Test items were a mixture of multiple-choice questions and questions requiring students to construct their own responses.

Students also answered a background questionnaire, which took about 35 minutes to complete. The questionnaire sought information about the students themselves, their attitudes, dispositions and beliefs, their homes, and their school and learning experiences. School principals completed a questionnaire about school management, organisation, and the learning environment.

Some countries/economies also distributed additional questionnaires, to students, parents and/or teachers, to elicit more information. The findings from these optional questionnaires are not covered by this note.