Israel has the second-most crowded classrooms among OECD countries, after Chile, according to a study by the Organization for Economic Co-operation and Development (OECD) published Monday. Israel pays teachers close to the OECD average, although starting salaries are in the bottom third of countries, and it spends 24% of its per capita GDP on education, below the OECD average of 25.3%, the study found.