The discovery was made as the school district worked with the Virginia Department of Education to review every student transcript — an evaluation prompted by an audit released last year that found widespread issues in the school system’s awarding of course credit.

Tuesday’s data release — the first since the “inappropriate practices” were uncovered — also showed that 24% of city students who would have graduated this year dropped out of school.

Statewide

The graduate rate was fairly stagnant across the state.

Last year, 91.6% of students who started high school in the fall of 2014 received their diploma. This year, 91.5% of students did. More than half of the students in this year’s graduating class across the state got an advanced diploma.

The percentage of students graduating on time has increased about 10 percentage points over the past 10 years.

“I believe this long-term, upward trend will continue as school divisions and the commonwealth adopt equitable policies and practices that provide instructional and support services tailored to the unique needs of every learner,” Superintendent of Public Instruction James Lane said in a statement.