Schools in Slovenia have less favourable disciplinary climates in science lessons compared to other OECD countries, according to students’ reports in the Programme for International Student Assessment (PISA) 2015, with an index of disciplinary climate of -0.07 (the OECD average index value was 0.00). Student truancy was lower than the OECD average, however: 12.4% of 15-year-olds reported skipping at least one day of school in the two weeks before the PISA 2015 test, compared to the average of 19.7% (OECD, 2016[1]).
The PISA 2015 index of instructional educational leadership (measuring the frequency with which principals report doing leadership activities specifically related to instruction) was among the highest in the OECD at 0.62 (the OECD average was 0.01) (OECD, 2016[1]). The proportion of lower secondary teachers in 2016 aged 50 or over was 36.3%, which was higher than the OECD average of 35.4%. In 2017, teachers in Slovenia had fewer net teaching hours for general programmes than the OECD average. Teachers annually taught 627 hours at both primary and lower secondary levels, compared to OECD averages of 784 and 696 hours, respectively (OECD, 2018[2]). According to school principals’ self-reports in PISA 2015, schools in Slovenia have lower levels of autonomy over curriculum than on average across OECD countries: 63.8% of principals reported that the school has primary autonomy over curriculum, compared to the average of 73.4%.
Lower secondary teachers in Slovenia earned 89% of the average salary of a full-time, full-year worker with tertiary education in 2016, which is similar to the OECD average ratio of 91% (OECD, 2016[1]). According to the OECD Teaching and Learning International Survey (TALIS) 2018, 77.9% of teachers in Slovenia said that if they could choose again, they would still become a teacher; this was slightly higher than the OECD average of 75.6% (OECD, 2019[3]).
According to school leaders’ reports in PISA 2015, school leaders in Slovenia are more likely than average to conduct self-evaluations of their schools (98.2% of students were in schools whose principal reported this, compared to the OECD average of 93.2%) but are much less likely than average to undergo external evaluations of their schools (46.7% of students were in schools whose principal reported this, compared to the OECD average of 74.6%). The share of students enrolled in secondary schools whose principal reported in PISA 2015 that standardised tests are used to make decisions on students’ promotion or retention was 21%, which was less than the OECD average of 31% (OECD, 2016[1]).
In 2017, school autonomy levels over resource management (allocation and use of resources for teaching staff and principals) were higher than the OECD average: 50% of decisions in Slovenia were taken at the school level, compared to the OECD average of 29%.
Slovenia’s annual expenditure per student at primary level in 2015 was USD 8 542, which was close to the OECD average of USD 8 631. At secondary level, Slovenia spent USD 8 290 per student, compared to the OECD average of USD 10 010, while at tertiary level (including spending on research and development) Slovenia spent USD 10 208 per student, compared to the OECD average of USD 15 656. In 2015, expenditure on primary to tertiary education as a proportion of gross domestic product (GDP) was 4.3% in Slovenia, which was lower than the OECD average of 5%. The proportion coming from private sources (including household expenditure, expenditure from other private entities and international sources) was lower than the OECD average (10.5% compared to 16.1%). Between 2010 and 2015, the relative proportion of public expenditure on primary to tertiary education in Slovenia decreased by 1.3 percentage points, which equalled the average level of decrease seen across OECD countries. During the same period, private expenditure increased by 2.1 percentage points in Slovenia, compared to an OECD average increase of 10.6 percentage points (OECD, 2018[2]).