Two East Bay schools have been the subject of cheating scandals recently. First, there were allegations that student employees had altered as many as 400 grades at Diablo Valley College in Pleasant Hill in exchange for cash since 2000. Then, claims that officials at University Preparatory Charter Academy in East Oakland changed grades and illegally used past tests to coach students on future ones. On Monday, discrepancies in grades were indeed discovered on teachers’ records, report cards, and transcripts at Uprep, according to the Chronicle. And yesterday, the paper reported that 34 current and former students at Diablo Valley College were officially charged with grade-changing by Contra Costa prosecutors. In some cases, grades were actually made worse. The defendants face felony charges of fraudulent computer access and conspiracy and misdemeanor charges of fraudulent use of a diploma.