Successful completion of an approved program, a passing score on the Michigan Test for Teacher Certification subject area test, and 30 to 50 hours of supervised clinical experience in the new endorsement area are required to apply to add an endorsement(s) to an existing certificate through . Endorsements must be added within five years of program completion and testing. Failure to be certified within this time period will require a program review and a retake of the subject area test(s).