What is the student-teacher ratio and how big are classes?

Class size and student-teacher ratios are much-discussed aspects of education and, along with students’ total instruction time (see Indicator D1), teachers’ average working time (see Indicator D4), and the division of teachers’ time between teaching and other duties, are among the determinants of the size of countries’ teaching force. Together with teachers’ salaries (see Indicator D3) and the age distribution of teachers (see Indicator D7, available on line), class size and student-teacher ratios also have a considerable impact on the level of current expenditure on education (see Indicator B6).