Executive Summary

Far too many students around the world are trapped in a vicious circle of poor performance and demotivation that leads only to more bad marks and further disengagement from school. Worse, poor performance at school has long-term consequences, both for the individual and for society as a whole. Students who perform poorly at age 15 face a high risk of dropping out of school altogether. When a large share of the population lacks basic skills, a country’s long-term economic growth is severely compromised.
Results from PISA 2012 show that more than one in four 15-year-old students in OECD countries did not attain a baseline level of proficiency in at least one of the three core subjects PISA assesses: reading, mathematics and science. In absolute numbers, this means that about 13 million 15-year-old students in the 64 countries and economies that participated in PISA 2012 were low performers in at least one subject.
Reducing the number of low-performing students is not only a goal in its own right but also an effective way to improve an education system’s overall performance – and equity, since low performers are disproportionately from socio-economically disadvantaged families. Brazil, Germany, Italy, Mexico, Poland, Portugal, the Rusian Federation, Tunisia and Turkey, for example, improved their performance in mathematics between 2003 and 2012 by reducing the share of low performers in this subject. What do these countries have in common? Not very much; as a group, they are about as socio-economically and culturally diverse as can be. But therein lies the lesson: all countries can improve their students’ performance, given the right policies and the will to implement them.
Multiple risk factors acting in concert
Analyses show that poor performance at age 15 is not the result of any single risk factor, but rather of a combination and accumulation of various barriers and disadvantages that affect students throughout their lives. Who is most likely to be a low performer in mathematics? On average across OECD countries, a socio-economically disadvantaged girl who lives in a single-parent family in a rural area, has an immigrant background, speaks a different language at home from the language of instruction, had not attended pre-primary school, had repeated a grade, and is enrolled in a vocational track has an 83% probability of being a low performer.
While these background factors can affect all students, among low performers the combination of risk factors is more detrimental to disadvantaged than to advantaged students. Indeed, all of the demographic characteristics considered in the report, as well as the lack of pre-primary education, increase the probability of low performance by a larger margin among disadvantaged than among advantaged students, on average across OECD countries. Only repeating a grade and enrolment in a vocational track have greater penalties for advantaged students. In other words, disadvantaged students tend not only to be encumbered with more risk factors, but those risk factors have a stronger impact on these students’ performance.
Less positive attitudes towards school and learning
Low performers tend to have less perseverance, motivation and self-confidence in mathematics than better-performing students, and they skip classes or days of school more. Students who have skipped school at least once in the two weeks prior to the PISA test are almost three times more likely to be low performers in mathematics than students who did not skip school.
Perhaps surprisingly, however, low performers in mathematics spend a similar amount of time as better-performing students in some mathematics activities, such as programming computers or taking part in mathematics competitions. They are more likely to participate in a mathematics club and play chess after school, perhaps because these activities are presented as recreational and are based on social interactions.
Less supportive teachers and schools
Students attending schools where teachers are more supportive and have better morale are less likely to be low performers, while students whose teachers have low expectations for them and are absent more often are more likely to be low performers in mathematics, even after accounting for the socio-economic status of students and schools.
In addition, in schools with larger concentrations of low performers, the quality of educational resources is lower, and the incidence of teacher shortage is higher, on average across OECD countries, even after accounting for students’ and schools’ socio-economic status. In countries and economies where educational resources are distributed more equitably across schools, there is less incidence of low performance in mathematics, and a larger share of top performers, even when comparing school systems whose educational resources are of similar quality.
Analysis also shows that the degree to which advantaged and disadvantaged students attend the same school (social inclusion) is more strongly related to smaller proportions of low performers in a school system than to larger proportions of top performers. These findings suggest that systems that distribute both educational resources and students more equitably across schools might benefit low performers without undermining better-performing students.
Policies that can help to break the cycle of disengagement and low performance
The first step for policy makers is to make tackling low performance a priority in their education policy agenda – and translate that priority into additional resources. Given the extent to which the profile of low performers varies across countries, tackling low performance requires a multi-pronged approach, tailored to national and local circumstances. An agenda to reduce the incidence of low performance can include several actions:
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Dismantle the multiple barriers to learning.
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Create demanding and supportive learning environments at school.
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Provide remedial support as early as possible.
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Encourage the involvement of parents and local communities.
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Inspire students to make the most of available education opportunities.
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Identify low performers and design a tailored policy strategy.
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Provide targeted support to disadvantaged schools and/or families.
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Offer special programmes for immigrant, minority-language and rural students.
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Tackle gender stereotypes and assist single-parent families.
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Reduce inequalities in access to early education and limit the use of student sorting.