It sounds like your Admin already has some experience from the Admin side. Just my personal opinion, but that's valuable to have prior to taking the Admin courses. That way, when you attend, it makes the learning focused on what you need rather then trying to figure out what an Account is or what an Activity is and how they relate.

I also agree with Jeremiah 100%. Too many distractions from the office or home. When you're out of town you can dedicate 100% of the time to learning.

Depending on the Admin's experience, I'd also suggest spacing out the courses. It allows more time to absorb the material and to apply what's learned practically back in the office.