The 2015 state average for students in public schools was 70 percent.
For RSHS, its college enrollment rate marks a decline since 2014, when 64.2 percent of its graduates chose post-secondary education.
Among high schools in Metro East, the class of 2015 college readiness rates at Waterloo High School (56.2 percent), Triad High School (53.6 percent), Mt Olive High School (42.9 percent), Southwestern High School (40.8 percent) and Collinsville High School (38.3 percent) were all higher than at RSHS. Cahokia High School (8.9 percent), Granite City High School (25.1 percent), Bunker Hill High School (45.1 percent) and North Mac High School (49.4 percent) were all lower.
The data, collected by the National Student Clearinghouse, includes two and four year colleges.
Enrollment at RSHS in 2015 was 544. 122 (22.43 percent) were seniors.
Also according to ISBE, 34.5 percent of RSHS 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."
RSHS students did better on reading (31.9 percent) and English (44.2 percent) and worse on science (23.9) and math (23.9).
Only 15.0 percent of RSHS students were college ready in all four subjects, according to ISBE.