DENVER (AP) -- The results are being released Wednesday morning.
More than 450-thousand children in eight grades now take the tests, which have been in existence for ten years. About one-and-a-half million tests were administered this past spring.
Officials say 14 of 25 statewide tests showed positive overall improvement, including schools previously rated as underachieving.
Black and Hispanic students improved on 17 of 25 tests.
Jo O'Brien, head of the education department's office of learning and results, says the department has never seen large numbers of ethnic and low income students improve.
The Colorado Student Assessment Program is now in its tenth year.
It includes exams in areas that include reading, writing, math, science, Spanish reading and Spanish writing.
(Copyright 2006 by The Associated Press. All Rights Reserved.)