HARRISBURG (AP) – Pension contribution rates for tens of thousands of public school employees in Pennsylvania could be going up. The board of the $64 billion Public School Employees’ Retirement System voted to raise pension contribution rates starting next July 1 for about 94,000 public school employees, all hired in 2011 or after. The board made the move as it works to straighten out what it has called a consultant’s mistake that also has drawn queries from federal investigators. The board originally certified rates in December. PA Senate Appropriations Committee Chairman Pat Browne warned that current state law does not allow the board to re-certify employee contribution rates.