If at any time vacancies exist or occur in the membership of all the members of any board of school directors in any school district, other than a school district of the first class or of the first class A, the court of common pleas of the county in which such district, or the largest part in area thereof, is located, shall, after ten (10) days from the time such vacancies exist or occur, appoint a board of properly qualified persons from the qualified electors of the district who shall serve, if the terms thereof continue so long, until the first Monday in December after the first municipal election occurring more than sixty (60) days after the vacancy shall have occurred; at which election a board of school directors for such district shall be elected for the remainder of the respective unexpired term. Whenever a vacancy of the entire membership of a board of school directors in any school district of the fourth class occurs, the executive director of the intermediate unit may enter and take full charge of and, at the expense of the district, maintain the schools thereof in accordance with the provisions of the school laws of the Commonwealth, under the direction of the Secretary of Education, and may continue in charge thereof until a board of school directors has been appointed from the qualified electors of the district and has qualified.