I suppose they could take this a step further by making students sign a confidentiality agreement for assignment solutions, which is legally stronger than a honor code agreement. I won't be surprised if this becomes a thing in the future.
> I am part of the Georgia Tech [private], and I have found code solutions for a class at Georgia Tech. Whenever student turn into their code assignments they agree to the Georgia Tech Honor Code stating they are not cheating or allowing others to cheat by sharing Georgia Tech’s assessment materials. The assignment materials were provided to students so that they could complete their tasks and isn't to be shared with others.
Some DMCA claims do indeed mention "The repository [from the student] contains code provided to complete assignments [georgia tech]" ([1]). But the claim at [2] does not mention this. It only says "This repository contains Georgia Tech class assignment solutions." under the section "Please provide a detailed description of the original copyrighted work".
[1] https://github.com/github/dmca/blob/master/2022/04/2022-04-0...
[2] https://github.com/github/dmca/blob/master/2022/03/2022-03-1...
The mind game is: The assignment is most likely produced with a solution, but published without (lets say else it would not be 'assignable'). For deterministic solutions, could you copyright it without publication?