Oklahoma schools showed some improvement in Academic Performance Index scores this year. In Norman, Cleveland Elementary School, posted a perfect 1,500 score this year. McKinley Elementary scored a 1,500 last year. The district's API score improved from 1382 to 1391 from 2007 to 2008.

Statewide, Oklahoma public schools incresed the state's API average by 27 points in one year. The state's average is 1,279, up from the 1,000 benchmark year in 2002. The main components of the index are reading/language arts and math tests in grades 3 through 8 and end of instructions in English and Algebra.

At the high school level, the index also measures the ACT college-entrance exam and the percentage of students taking the ACT, Advanced Placement credit and college remediation rates in reading and math. Attendance and graduation rates are also measured.

Math scores improved this year. Reading scores were better in Grades 4 through 6 and 8 and in English II.

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