Teacher A teacher in a Pennsylvania public school is a person who is properly certified for the position and who devotes at least fifty percent of their time to teaching or other direct educational activities. A teacher must also be a citizen of the United States, of good moral character, and at least eighteen years old. The citizenship requirement can be waived in certain circumstances. A teaching certificate is a necessary but not a sufficient condition to be a teacher.
Teachers are professional employes, temporary professional employes or substitutes.
Otherwise, the emoluments of tenure are lost.