Every state requires that teachers complete certain requirements to earn a teacher’s certificate in order to teach in that state. Most states extend this requirement to private schools, though some jurisdictions may waive this for certain sectarian or denominational schools. The requirements that must be satisfied and the procedures that must be followed to earn certification vary from state to state. Requirements generally include completion of a certified education program, completion of a student teaching program, acceptable performance on a standardized test or tests, and submission of background information to the appropriate state agency in charge of accreditation. Some states require more extensive physical and mental testing of teachers and a more extensive background check. Some states also require drug testing of applicants prior to certification. An increasing number of states now require teachers to complete a satisfactory number of continuing education credits to maintain certification.