Illinois State Board of Education (ISBE) records show that 71.6 percent of Plainfield South High School's (PSHS) 2015 graduating class enrolled in college within 12 months of graduation.
The 2015 state average for students in public schools was 70 percent.
For PSHS, its college enrollment rate marks an improvement over 2014, when 70.6 percent of its graduates chose post-secondary education.
The data, collected by the National Student Clearinghouse, includes two- and four-year colleges.
Enrollment at PSHS in 2015 was 2,653; 645 (24.31 percent) were seniors.
Also according to ISBE, 45 percent of PSHS seniors were "college ready" in 2015, versus an average of 46 percent statewide.
All students who score a 21 on the ACT qualify as "college ready."
PSHS students did better on reading (37.9 percent) and English (62.6 percent) and worse on science (32 percent) and math (36.5 percent).
Only 21.7 percent of PSHS students were college ready in all four subjects, according to ISBE.
Among high schools in Will County, the class of 2015 college readiness rates at Lincoln-Way East High School (71.1 percent), Plainfield North High School (61.2 percent), Lockport Township High School East (59.8 percent), Peotone High School (52.7 percent), and Plainfield East High School (48.8 percent) were all higher than at PSHS. Joliet Central High School (22.9 percent), Crete-Monee High School (33.9 percent), Romeoville High School (38.4 percent) and Joliet West High School (40 percent) were all lower.