Hi Colleen,
I do have experience with both. I used the Ultimaket back in 2021 and currently have the Bambu X1 Carbon and absolutely love it!
The Ultimaker was a big step up from the Makerbot I had before but hands down prefer the Bambu - both hardware and software.
I am just getting into the Bambu slicer and there are so many options available that I have even yet to explore. The support and infill options interface is a bit more complex than what I was used to (a Prusa MK3s+) so it might take a bit more explaining to a younger student.
In 6 months, I’ve only had one jam and it was just a small piece of filament broken off in the feeder tube.
For next year I will be ordering another Bambu - probably not with the Carbon option because two would be overkill.
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Also, the Bambu works over our network so students login just using my ID. It has an app as well so you can monitor while off campus.
Have fun printing!
Katie