Your SC CWP is good for 5 years and you can renew it online without taking another class when it is time. SLED will send you a reminder card in the mail that your SC CWP is up for renewal sometime within 120 days before renewal. You can go HERE to renew your SC CWP online. You have to wait until 89 days before the CWP expires before you can renew it online. It won't let you renew it 90 days before but will at 89 days. It is a very simple process and takes only a couple of minutes to do online at 89 days before expiration.