If you are really interested in the Greek educational system, this is a more informative read:http://www.oecd.org/dataoecd/44/21/48657344.pdfIn 1997, 56% of 25-64 year-olds had not completed upper secondary education, 29% had completed upper secondary or post-secondary non-tertiary education, and 16% had completed tertiary education. Twelve years later, the numbers looked very different: 39% of 25-64 year-olds had not completed upper secondary education, while 38% had completed upper secondary or post-secondary non-tertiary education, and 24% had completed tertiary education (Table A1.4).
A comparison of educational attainment between 25-34 year-olds and 55-64 year-olds shows that Greece has seen a 35 percentage-point increase in the proportion of those who have attained at least an upper secondary education – from 40% among the older cohort to 75% among younger Greeks (Chart A1.2). Overall, in 2009, 61% of 25-64 year-olds had attained at least an upper secondary education. In addition, more young adults are enrolling in post-secondary studies: the proportion of 20-24 year-olds in education rose from 31.9% in 1997 to 47.2% in 2009 (Table C4.4).
Recommendations are also provided in the document.
For some reason the 2011 Legatum Prosperity Index ranks Greece ahead of Germany and Israel in the education category:http://www.prosperity.com/education.aspx
That makes little sense to me based on what I know.