Chris Parr

Why does class size affect educational outcomes?

The number in a class can profoundly affect educational outcomes – but more research is needed, says US academic

Why class size matters

A number of educational debates appear immune to any attempt at putting them to rest. Child-led versus direct instruction is one; behaviour approaches is another. But just as persistent and emotive is the question of class size. And, according to Larry Hedges, that is despite very good evidence that class size does, indeed, matter.

Hedges is chair of the department of statistics at Northwestern University in Illinois, and a professor of education and social policy, psychology and medical social science. In 2018, he won the prestigious Yidan Prize for his groundbreaking work developing ...

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