The Fraser Institute will not be releasing its Alberta high school ranking report Saturday because of possible problems with the data.

In a last minute decision, the Institute's vice president Peter Cowley says analysts found inconsistencies with the information.

He says since the results of the report are important to people, they want to make sure the data is correct before releasing it.

This is the second time in 15 years that the results of the report have been questioned.

Cowley says there will now be re-testing to verify results and he isn't sure when the rankings will be released.