COLUMBUS - Results of ACT college-admission tests suggest that nearly three-quarters of Ohio high school graduates aren't completely prepared for college.

Test results released Wednesday show that only 28 percent of test-takers in the Class of 2011 at Ohio public and private high schools met college readiness standards in English, reading, math and science.

The state beat the national readiness score of 25 percent.

The Ohio graduates appear to be least prepared for college science courses. Just 35 percent of the state's 2011 graduating class scored high enough to predict they may get a C or better in the typical college freshmen biology course. Another 17 percent were within two points of meeting the science benchmark. By contrast, 71 percent of the class met the benchmark in English with another 10 percent within two points in that subject.

Interim president Jon Erickson of ACT's Education Division said in a statement that too many students are still falling through cracks in the education system.

The results evaluate the performance of 2011 graduating seniors who took the ACT as sophomores, juniors, or seniors and self-reported at the time of testing that they were scheduled to graduate in 2011 and tested under standard time conditions.

In all 92,313 of Ohio graduates took the ACT. That figure has increased by 7.2 percent since 2007. During that same time, the number of high school graduates in the Buckeye State has decreased by 0.5 percent.

While only 28 percent met benchmarks in all four subjects, 16 percent met three, 18 percent met two and 15 percent met just one. Another 23 percent did not score high enough in any of the four subject to meet a benchmark.

Ohio's composite score for the test is 21.8 which bests states like Michigan (20.0), Kentucky (19.6), and Illinois (20.9), but not Indiana (22.3) and Pennsylvania (22.3).

Nationally the composite score was 21.1. Across the nation, approximately 49 percent of 2011 graduates took the ACT.