Beginning this past Sunday, the Detroit Free Press began rolling out a massive year-long investigation into Michigan’s $1 billion charter school system. The state has more for-profit companies operating charters than any other in the union and the investigation is considered a referendum on how they’re doing. Among the major findings being rolled out daily through Saturday: Michigan charters spend $1 billion a year in taxpayer dollars with little accountability and, they do no better in terms of student achievement compared to traditional public schools.

Get started by checking out the FP’s handy guide to this massive package that’s sure to reverberate nationally.

(h/t Washington Post)