fortythree percent of yearolds have attained secondary education compared to the oecd average of and have attained tertiary education compared to the oecd average of turkey has made significant improvement in pisa assessments in mathematics from and science from but remains one of the lowest performers among oecd countries in reading mathematics and science and the proportion of yearolds who underperformed on the pisa reading assessment is above the oecd average figure the impact of students socioeconomic status on performance and the difference in academic performance between boys and girls are both higher than the oecd average see annex b about of yearolds and of yearolds the typical starting age are enrolled in preprimary education in turkey the majority of women with at least one child between and years old do not participate in the labour market are employed compared to the oecd average of to ensure higher upper secondary completion rates turkey has increased compulsory schooling from to years with a starting age of years