COLUMBUS, Ohio (AP) --Six Ohio school districts that were found to have altered student data to improve their performance ratings have been issued new state report cards.

The Ohio Department of Education is releasing new report cards Tuesday for all 143 schools in the six districts, which include Cincinnati, Cleveland and Toledo.

The Columbus Dispatch reports that the state is changing grades for 20 schools for the 2010-2011 school year. Grades at 10 Cleveland schools dropped. The only two that rose were in Cincinnati.

The most significant change is the lowering of the 2011 rating for the Northridge Local School District in Montgomery County from Excellent to Continuous Improvement, a drop of two levels under the rating system in place at that time.

State Auditor Dave Yost found that a handful of districts statewide "scrubbed" kids who hadn't left from the rolls so their grades wouldn't hurt overall performance ratings.

Those students were added back in and the real grades and academic data were figured for those districts.