On the 2014-2015 PARCC exam (www.illinoisreportcard.com), students at Crystal Lake South High School scored a passing rate of 22.4 percent and a failure rate of 77.6 percent. Passing the PARCC exam reflects the percentage of students who "met expectations" or "exceeded expectations." In Illinois overall, 32.9 percent of students passed the PARCC exam.
Per-pupil spending at Crystal Lake South High is $14,618. The average spending in the state is $12,521. Crystal Lake South High is part of the CHSD 155 school district. 85.4 percent of CHSD 155's spending is supported by local funding. For the average school district in Illinois, 66 percent of per-pupil spending is supported with local funds.