You can also check out Champions School of Real Estate and Kaplan Real Estate Education. I know you are inquiring about an online ethics class but there are a lot of title companies and builders that hire real estate instructors to teach this course for free in person.
Cassandra Vickers
RE/MAX Prestige
832-298-9062
I just recently use 2betrained.com / 123CE inc and they seem to offer promo codes pretty regularly to help keep the cost down. They have the package of legal and ethics if both are required/needed. Good luck!