Virginia education officials say 88 percent of students in the class of 2012 graduated after four years of high school. That’s an increase of more than 7-percent since 2008. Locally, on-time graduation rates improved in six of 12 Lynchburg-area public schools for the class of 2012. Lynchburg’s Heritage and EC Glass High Schools had the biggest increases at 7 percent and 4 percent respectively. Jefferson Forest High School in Bedford County had 92.6 percent of students graduate on time — the highest graduation rate of any public school in the area, but down 1 percentage point from 2011.