Hello and welcome Jeff, glad to see you here. I have passing experience and awareness of IMathAS, oh wait, I did install it when working on a BCcampus project where we evaluated also Numbas and WebWork. But I know my former colleagues at the Maricopa Community Colleges use it at a large scale as well as seeing it used at other places.
Your question here is a good one to ask more broadly in this community, and it might be seen here in a hello thread. I might suggest to you (and others asking good questions like this), to create it as a new topic say in the general OEG Plaza area where it might get more visibility…as an open community space, it gets messy sometimes, and we are looking to find a more visible place to launch good requests like this.
Peace back at you from someone who always loved math as student, Alan.