LINCOLN, Neb. (AP) — One in three Nebraska students who took a new state science exam scored below a level that school administrators consider proficient.

Test results released Tuesday show nearly 67 percent of the students met or exceeded proficiency levels on the test, which is more rigorous than the science exam given in past years. The test was administered to students in the 5th, 8th and 11th grades.

Nebraska Education Commissioner Roger Breed says the scores represent a new baseline that will help measure student progress in the future. He says the new scores cannot be compared to older results, because the new science test is more extensive.

This year’s results show reading and math scores have improved since 2011, but one in three students were not proficient in math.