Both prepare you for the same Arkansas building-level administrator license, but they differ in scope: this certificate is 18 credit hours; the Ed.S. is 30 credit hours. The certificate does not add an Ed.S. designation to your transcript, which may affect district salary schedule placement in some districts. If you want the fastest route to licensure without another full degree, the certificate is built for that; if you want the additional academic credential, the Ed.S. is the fuller investment.