It is NOT too late to join/renew membership CSTAE before the convention! The cost is $20.
If you are NOT already a member of NAEA, you will have to join NAEA first, and then join CSTAE at the same time.
If you ARE already a member of NAEA, just go to the NAEA online "store" at http://www.arteducators.org/ and follow these steps:
Questions? Call NAEA Member Services 800-299-8321 from Monday-Friday, 8:15am-4:30pm ET.