The special education subject matter certificate expires after five years, and as follows:

(1) A certificate issued prior to June 30th of a calendar year shall have the expiration date of the certificate calculated on the basis such certificate was completed on June 30th of the same calendar year regardless of the date of issuance; and

(2) A certificate issued July 1st or later in the calendar year shall have the expiration date of the certificate calculated on the basis that such certificate was completed on June 30th of the next calendar year regardless of the date of issuance.