24 Pa. Stat. § 3-319
If any person elected or appointed as school director, who has been notified of his election or appointment, shall refuse or neglect to qualify as such director, within ten days next succeeding the beginning of his term of office, the remaining members of the board may declare his office as director vacant. His office shall be filled from the qualified electors of the district.
If any person having qualified as school director and any qualified school director who is a member of a joint board or who is selected as a member of a joint school committee or who is a member of a joint school committee by virtue of the provisions of a joint board agreement shall neglect or refuse to attend two successive regular meetings of the school board, joint board or joint school committee, unless detained by sickness, or prevented by necessary absence from the district, or if in attendance at any meetings shall neglect or refuse to act in his official capacity as a school director, the remaining members of the board may declare his office as director vacant. His office shall be filled from the qualified electors of the district.
24 P.S. § 3-319