The Illinois State Board of Education (ISBE) said 52.3 percent of Bradley-Bourbonnais Community High School's (BBCHS) 2015 senior class was "college ready."
The state average for college readiness in 2015 was 46 percent. Northside College Preparatory High School (98.1 percent) had the highest college-readiness rate in the state. Robeson High School (zero percent) had the lowest.
All students who score a 21 on the ACT qualify as "college ready."
"(This score) shows that students have learned important academic skills that they will need in order to succeed in college and careers," ISBE wrote in its analysis. "While academic preparation is an essential part of readiness for college and careers, students also need persistence, motivation, time management and technical skills."
BBCHS students did better on reading (46.4 percent) and English (67.4 percent), and worse on science (35.4) and math (43.3).
Only 24.7 percent of BBCHS students were college ready in all four subjects, according to ISBE.
The 2015 state average was 25 percent.
Among other high schools in Kankakee County, the Class of 2015 college-readiness rate at Herscher High School (53.6 percent) was higher than at BBCHS. Kankakee High School (22.1 percent), Momence High School (28.7 percent) and Manteno High School (50.9 percent) were all lower.
Enrollment at BBCHS in 2015 was 2,083, with 534 (25.64 percent) freshmen and 454 (21.8 percent) seniors.