A recent update on free preschool for needy kids.

https://highscope.org/perrypreschoolstudy

Study published in 2010 of most of 40 (2005) year olds.

"The study found that adults at age 40 who underwent the preschool program had higher earnings, committed fewer crimes; were more likely to hold a job, and were more likely to have graduated from high school than adults who did not have a preschool education."

This is very informative because of The Great Bush Recession of 2008. Globalization had affected the area earlier than 2005 and the study groups were recovering from the local recession of company closings. The 50 year update of 2015 will show how the recovery from both economic shocks were to these study groups.