"Zoom" drug classes are usually live classes which are conducted by a teacher using Zoom software or other video conferencing software. The main difference between an online drug class and a Zoom drug class is the zoom class is conducted at a specific time and is done in front of a teacher.
While Zoom classes have the same convenience of Online Drug Class in that you don't have to travel to a classroom to take the class, you're still stuck taking the class at a specific time.