Increasing the number of years in education - is pre-school the answer?

New policy paper released from the EFA Global Monitoring Report Team at UNESCO:

Studies in developing countries on the benefits of preschool vary in scope, but paint a similar picture overall, demonstrating positive effects on subsequent primary school performance. Participation is found to be particularly beneficial for those from poor and disadvantaged backgrounds [...] Attending pre-school also tends to increase the years of education that children eventually attain. 

Get the policy paper here.