Good list.
I'll echo the above suggestion of dial calipers...at least in addition to the digital ones. Unless you spend big bucks, the digital ones may not make it through build season. I've bought the ones on your list before and they were short lived. The same amount on dial calipers will last years. Just a thought.
If you have room in the budget, up your drill bit quality as high as you can spend. Consumer grade drills have a very limited number of holes in tougher materials, and that includes aluminum. HSS or cobalt steel drills are way harder....your students may find that drilling holes is actually fun with good drills. At least mine did!
https://www.amazon.com/dp/B00FXGOMIW?psc=1
or any of the HSS indexes on Amazon...some pretty good prices out there. Word of warning with small diameter HSS drills....very easy to break. For that reason I'd still have the Dewalt index for general work. We have both levels of drills in our shop.
Also agree with others on a corded drill along with a cordless.