Hello, I'm glad you are interested in the jam, however this will only be my second game project in Unreal Engine, so I am not experienced in remote collaboration too.
Ideally I'd recommend posting on r/gamedev on reddit to look for a experience like this.
But if the students are still interested, and if they are willing to make the assets under the Creative Commons Attribution so there are no licensing problems, I could ask for some 2D sprites or music, but in the spirit of the jam they can only start on April 1 :D
I wish good luck to the dev class