by Sarah Harper
Graduation rates have fallen in Illinois, according to annual report cards released Monday.
This is due to a change in how Illinois calculates its graduation rate. The new formula follows federal guidelines, according to WBEZ.
The Annual School Report Card data showed that about 75 percent of high schools in the state experienced drops in graduation rates, reported the Chicago Tribune.
Where almost 100 high schools experienced graduation rates of 100 percent last year, only 18 high schools - including Chicago's Northside College Preparatory High School - experienced graduation rates of 100 percent this year.
The new testing formula is more honest, said U.S. Education Secretary Arne Duncan. WBEZ reported that last year some high schools had let low-performing juniors skip testing. The state has closed that loophole.