Iowa Code § 256.153: Continuity of certificates and licenses.

1. A certificate which was issued by the board to a practitioner before July 1, 1989, continues to be in force as long as the certificate complies with the rules and statutes in effect on July 1, 1989. Requirements for the renewal of licenses, under this part, do not apply retroactively to renewal of certificates. However, this section does not limit the duties or powers of a school board to select or discharge practitioners or to terminate practitioners’ contracts.

2. A practitioner who holds a certificate issued before July 1, 1989, shall, upon application and payment of a fee, be granted a license which will permit the practitioner to perform the same duties and functions as the practitioner was entitled to perform with the certificate held at the time of application. A practitioner shall be permitted to convert a permanent certificate to a term certificate, after July 1, 1989, without payment of a fee.