The number of pre-school institutions was 8 392 units in 2013 with a net enrolment of 631 489 children, a significant increase from 232 925 children enrolled in 2007 (MESRK, 2013b). The duration of lower secondary education is 5 years, followed either by 2 years in general upper secondary education or 3 or 4 years in technical and vocational education. Students that successfully complete general or vocational upper secondary education can attend either post-secondary technical and vocational training programmes or continue to higher education (OECD, 2013).