James Logan High is back to zero -- and that's not good.
A violation of state standardized testing rules means the Union City high school's Academic Performance Index score has been erased, according to the Contra Costa Times.
Administrators at the school allowed students to finish a test begun on a different day in violation of the rules, the newspaper reported. School district officials reported the violation to the state in May.
Twenty-seven other schools in the state lost their API ratings, for reasons including "security" breaches, the newspaper reported.
At Logan, 209 students who didn't finish tests were allowed to complete them later. The rules say that time limits must be enforced.
API ratings are important; schools who consistently rank low on the test can be taken over by the state, though that has never happened, an official said.
Logan's 2012 API score was 737, which meets state standards, the newspaper reported. It would have scored a 745 for 2013 had the mark not been erased, the newspaper reported.