Online music theory learning system

​I'm exploring ways to get music education content out to as many students as want to have it during your month long spring break (!)  While none of this can be or will be figured into your grades, there's a system called UTheory that looks interesting with some possibilities for feedback from me as your teacher and not just online "right"/"wrong" results.  The link to my classroom is:

https://utheory.com/section/7jx7z

There seems to be lessons built into this online system as well as setting up levels (i.e. elementary vs high school) but I need to look over it.  However, in order to make it happen, I'll need some students to enroll using the link above.  There shouldn't be any cost to the student.  I'll wait a couple of days to see what happens and I'll let you know from there what's what with UTheory.  

UPDATE TWO HOURS LATER AFTER EXPERIMENTING:

There's some legit skills and lessons in this online program.  The beginning stuff is good for those who are just starting to read music for the first time (some chorus and guitar students plus 5th grade band) while the skills toward the end are MUCH more high school and even college level.  There's something for everyone.  Much like E2020, it's set up with a video lesson followed by a hands on skills test which will work with an ipad (what I used), smartphones, and laptops/mouse.  It's free to enroll - just a name (please use your own name so that I can contact you if you want help) and an email address and you're off!  Something musical to do while at home.

For those who don't know it, my cell number is 734-778-3418 if you have any questions about anything music or otherwise.  MK