The performance of Utah's public schools won't be released until Sept. 30.

That makes it difficult for parents to take advantage of options offered by the federal No Child Left Behind education law.

Schools that fail to meet the standards for two years in a row must send letters to parents offering to bus students to better-performing schools. But schools can't send those letters if they don't know whether they met goals.

State associate schools superintendent Judy Park says the schools' performance is based mostly on state tests done toward the end of the last school year, and Utah hasn't compiled the results yet.

Some other states have the same problem.