Teacher Starting Salary vs. Cost of Inmates (U.S.)
Educator.com provides an interesting comparison in light of the correlation between education as crime. More telling, however, would be a comparison with the amount spent on schoolchildren or in fighting poverty. I believe most states would then be in the red.
http://www.educator.com/adsv/bp/img/sep09/CR004_Educator_09_15_09.php