(Guest Post by Matthew Ladner)
A few years ago, a rookie quarterback named Michael Bishop was brought into a game to perform a last second desperation bomb before the end of the half. It was his first pass as an NFL player, and against the odds it resulted in a long touchdown. Commenting on the pass for ESPN, Chris Berman said something to the effect of “Completion rate-100%. Pass to touchdown ration also 100%. QB Rating = INFINITY!!!!!”
This came to mind when reading this great piece by Wolf and McShane in that had Congress redirected money from the bloated and ineffectual DCPS for the Opportunity Scholarship Program, then the cost of the program would have been nothing and the benefits substantial, meaning ROI = INFINITY!!!”
!!!BOOOOOOOOOOOOOOOOOOOOOOOOOM!!
[Note: This is based on their peer reviewed article that is in the current issue of Education Finance and Policy.]
Jay P. Greene's Blog 
[…] piece, Matthew Ladner of the Foundation for Educational Excellence brought up a great point over at Jay P. Greene’s blog. It’s important to remember that the OSP was an additional expenditure, DCPS was held harmless. […]