MADISON, Wis. (AP) _ University of Wisconsin System President Kevin Reilly says he is leaving the job he's held for nearly nine years.

A statement from the UW System Tuesday said Reilly will leave to advise the American Council on Education in January 2014 and return to teaching. He'll continue as the UW System's chief executive through the end of the calendar year.

Regent President Michael Falbo credits Reilly with being a ``strong, effective leader for the UW System.'' The system now serves more than 182,000 students systemwide.

The 63-year-old Reilly has been president since September 2004.

He was at the center of a storm earlier this year over UW building $650 million in reserves at the same time it was raising tuition 5.5 percent a year.

The backlash resulted in the Legislature passing a tuition freeze and calls from some for Reilly to leave.