▁of ▁the ▁ten ▁the ▁exceptions ▁to ▁the ▁Act ▁ 1 ▁Index . ▁The ▁following ▁exceptions ▁were ▁maintained : ▁ 1 ) ▁costs ▁to ▁pay ▁interest ▁and ▁principal ▁on ▁inde bt ed ness ▁in cur red ▁prior ▁to ▁September ▁ 4 , ▁ 2 0 0 4 ▁for ▁Act ▁ 7 2 ▁schools ▁and ▁prior ▁to ▁June ▁ 2 7 , ▁ 2 0 0 6 ▁for ▁non - Act ▁ 7 2 ▁schools ; ▁ 2 ) ▁costs ▁to ▁pay ▁interest ▁and ▁principal ▁on ▁elect oral ▁deb t ; ▁ 3 ) ▁costs ▁in cur red ▁in ▁providing ▁special ▁education ▁programs ▁and ▁services ▁( be yond ▁what ▁is ▁already ▁paid ▁by ▁the ▁State ); ▁and ▁ 4 ) ▁costs ▁due ▁to ▁increases ▁of ▁more ▁than ▁the ▁Index ▁in ▁the ▁school ' s ▁share ▁of ▁pay ments ▁to ▁P SER S ▁( PA ▁school ▁employees ▁p ension ▁fund ) ▁taking ▁into ▁account ▁the ▁state ▁mand ated ▁P SER S ▁contribution ▁rate . ▁ ▁The ▁School ▁District ▁Ad just ed ▁Index ▁for ▁the ▁W allen p au pack ▁Area ▁School ▁District ▁ 2 0 0 6 - 2 0 0 7 ▁through ▁ 2 0 1 1 - 2 0 1 2 . ▁▁ 2 0 0 6 - 0 7 ▁- ▁ 3 . 9 %, ▁Base ▁ 3 . 9 % <0x09> ▁ 2 0 0 7 - 0 8 ▁- ▁ 3 . 4 %, ▁Base ▁ 3 . 4 % <0x09> ▁ 2 0 0 8 - 0 9 ▁- ▁