D.C. standardized test scores released amid cheating questions

District of Columbia Mayor Vincent Gray and education leaders released the latest batch of standardized test scores.

The Comprehensive Assessment System tests are given to students in grades 3 through 8 and 10th grade to measure their skills in core subjects.

The 2011 D.C. assessment shows growth in secondary math and improvements in grades 7 and 8, the District reports.

The District stated:

* Secondary math and reading scores have risen steadily since 2007.

* Every grade is performing at higher levels in math since 2007. Grades 7 and 8 went from the lowest performing grades in math to the highest performing grades.

* When compared to 2007, elementary scores show steady growth, with reading scores rising from 37.5 percent proficient in 2007 to 43.0 percent in 2011, and math scores rising from 29.3 percent proficient in 2007 to 42.3 percent in 2011.

The release of the scores comes amid questions about possible cheating. The district's inspector general is investigating whether gains in test scores at more than 100 schools were driven by cheating. An investigation by USA Today found that those schools had unusually high numbers of erasures in which wrong answers were changed to correct ones.

Results from three classrooms on last year's tests were invalidated this spring because of proven incidents of cheating.

The Associated Press contributed reporting.