The latest edition of "Education at a Glance" was published on 11 September 2018. Besides the general publication, you will again find many country notes with specific information on the respective countries.
"OECD's annual Education at a Glance looks at who participates in education, what is spent on it, how education systems operate and the results achieved. The latter includes indicators on a wide range of outcomes, from comparisons of students’ performance in key subject areas to the impact of education on earnings and on adults’ chances of employment. This book includes StatLinks, urls linking to Excel® spreadsheets containing the background data." [Abstract: Site editor’s information supplemented by editors of Education Worldwide]