Slovenia scored higher than the OECD average in science in PISA 2015, with a mean score of 513 points, compared to the OECD average of 493 points. Performance in science remained stable across PISA cycles with an average score change of -1.5 score points, while performance in reading and mathematics has stayed the same. Although there were significant changes between cycles in reading, the overall average of these changes up to 2015 is not significant. Socio-economic and cultural status had an average impact on science performance in PISA 2015, explaining 13.5% of the variance in performance (the difference with the OECD average of 12.9% is not statistically significant). The impact of ESCS on performance in science has declined since 2006. Gender differences in science performance were 6 points in favour of girls, compared to the average difference across the OECD of 4 points in favour of boys. Immigrant students make up 7.8% of the student population of 15-year-olds in Slovenia, a lower proportion than the OECD average of 12.5%. Performance differences between immigrant and non-immigrant students are higher than the OECD average. Immigrants scored on average 45 score points lower than non-immigrants in science in PISA 2015, compared to the OECD average of 31 score points.
Enrolment of 3-year-olds in ECEC and preschool education was higher than the OECD average in 2015, at 82.8%, (OECD average: 77.8%). Slovenia has an integrated preschool system that combines education and care for children from age 1 to age 6. Preschool education in kindergartens is provided in two age groups: children age 1-3 and children age 3-6 or until they start school. Preschool education is covered by the Kindergarten Curriculum, a national curriculum in place that provides a framework for education and care for 1-6 year-olds. Compulsory education in Slovenia is organised in a comprehensive structure called basic school that caters to students from age 6 to age 15. Students are first tracked into different educational pathways at age 15, later than the OECD average of age 14. Upper secondary education in Slovenia consists of general education and vocational-technical education, and schools can offer both types of programmes. General education is provided in four-year gimnazija programmes. Transfers between vocational and general education tracks are enabled by special one-year courses (Matura courses and vocational courses) funded by the state. General upper secondary programmes lead to the general upper secondary leaving certificate (Matura), which provides direct entry to tertiary education. All tracks lead to qualifications to enter the labour market in specific occupations, to the vocational upper secondary leaving certificate (vocational Matura), or to a school leaving exam.
VET is offered in three tracks at upper secondary level. All tracks lead to qualifications to enter the labour market in specific occupations, to the vocational upper secondary leaving certificate (vocational Matura), or to a school leaving exam. Students with a vocational Matura can pass additional exams in general Matura subjects to access academic higher education. In the OECD Survey of Adult Skills in 2012 and 2015, adult literacy scores in Slovenia were lower than the OECD average, at 256 points, compared to the OECD average of 268 points. The gap in literacy skills between older adults (age 55-65) and younger adults (age 25-34) was close to the OECD average. The proportion of the population aged 25-64 with lower secondary education as the highest level of attainment in Slovenia is lower than the OECD average, with an attainment rate of 11.8% in 2016, compared to the OECD average of 14.3%. NEET rates (the proportion of those aged 18-24 that are not employed or in further education or training) are lower than the OECD average, at 10.6%, compared to the OECD average of 15.3%. The percentage of the population aged 25-34 with a tertiary-level qualification is close to the OECD average, at 43.0% in 2016, compared to the OECD average of 43.1%. Employment rates for 25-34 year-olds with tertiary education are lower than the OECD average. In 2016, 81.4% were employed, while the OECD average rate was 82.9%.