NEW ORLEANS (AP) — Louisiana's education chief says student performance on new, more rigorous standardized tests aligned to Common Core standards was "roughly comparable" to results from tests used in the past.

However, math performance was lower. And the percentage of students who show what state officials currently consider "mastery" of their subject matter is low: It ranges from 22 percent to 40 percent depending on the grade level and subject.

John White, Louisiana Dept of Education

Monday's release of test results came a day before the state education board is to decide on a grading scale to determine what score constitutes proficiency in subject matter — levels ranging from "unsatisfactory" to "advanced."

Superintendent John White is urging the board to approve scoring levels consistent with other states using the Common Core-aligned tests developed by the PARCC organization.

Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.