In June 2011, the Pennsylvania General Assembly passed legislation eliminating six of the exceptions to the Act 1 Index. Several exceptions were maintained: 1) costs to pay interest and principal on indebtedness incurred prior to September 4, 2004 for Act 72 schools and prior to June 27, 2006 for non-Act 72 schools; 2) costs to pay interest and principal on electoral debt; 3) costs incurred in providing special education programs and services (beyond what is already paid by the State); and 4) costs due to increases of more than the Index in the school's share of payments to PSERS (PA school employees pension fund) taking into account the state mandated PSERS contribution rate. The legislature also froze the payroll amount public school districts use to calculate the pension-plan exception at the 2012 payroll levels. Further increases in payroll cannot be used to raise the district's exception for pension payments. A specific timeline for Act I Index decisions is published annually, by the Pennsylvania Department of Education.