In no circumstances should you ever do that. It can only be used against you.

-- Cardinal de Richelieu

You former employer doesn't care about how logical you are. At best, you saved them EI payments, and at worst you just left them with a mess that will need to clean up. At best, you might want to grab a beer with a *trusted* co-worker to discuss problems. Doing an exit interview is only slightly less stupid than writing a letter.

Provide the book resources as a tutorial but get the students to do something different for the actual assignment. It could be as simple as swapping a few textures or effects. A blur on a cat will look very different to a blur on a dog even though the technique is the same.