Publicly funded, privately run charter schools consume more than $900 million in state and local tax dollars. A comprehensive evaluation has been difficult. Today’s story is the second in a three-day series. It is a part of a multiyear project to create a database and authoritative stories so parents can make informed choices and the public can understand this form of government privatization.

SunDAy: Many charter schools

lack transparency.

TUESDAY: Public school districts use local funds to transport charter-school kids.