MILWAUKEE, WI (WTAQ) - A state audit shows very little difference in test results between Milwaukee’s public school students, and low-income kids who get state-funded vouchers to attend private school.

The Legislative Audit Bureau released the results Thursday of its comparisons between voucher students and public school kids in both 2011 state standardized test, and the state test from 2007.

The auditors found that math scores improved at almost the same rate among both groups.

Eighth-graders improved at the same rate in reading – but voucher students in the 7th and 10th grades had higher reading improvements than their public school counterparts.

Auditors say they could not conclude that voucher kids perform better than public students.

For one thing, vouchers schools were not required to administer the Wisconsin Knowledge and Concepts Exam until a year ago.

The audit said many youngsters transferred between the two systems during the time period that was studied.