How to Scale Up a Preschool in a Low Income Neighborhood

Liszt set up a programme in chicago to explore incentives for students, parents and teachers that would produce the biggest educational gains. He says policy makers should have over sampled bad teachers rather than hiring best of everything. If you want to keep the budget the same, sure, you can bust the budget, but with the same budget will i have the same voltage? And the fact is, i won't.