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."
RIHS students did better on reading (22.4 percent) and English (39.6 percent), and worse on math (17.0) and science (17.2).
Only 9.3 percent of RIHS students were college ready in all four subjects, according to ISBE. That's down from 9.8 in 2014.
The 2015 state average for college readiness in all four subjects was 25 percent.
Among high schools in Rock Island County, the class of 2015 college readiness rate at United Township High School (27.0 percent) was higher than at RIHS. Enrollment at RIHS in 2015 was 1,851; 537 students (29.01 percent) were freshmen; 402 (21.72 percent) were seniors.