This would be an interesting approach if the course supplied a custom Harness (perhaps in place of a textbook) and this was part of the instruction set inside of it. As a standalone thing you ask students to import into their agent, seems unlikely to work.

To be fair, shipping these guidelines as AGENTS.md/CLAUDE.md in the repo that contains the assignments will make it so that agents will pick this up without needing students to opt in explicitly. Seems like a reasonable first step to me