Our area doesn’t have free community college tuition for high school students. Cost per unit is the same regardless of age of the student, so it would be ~$300 per 3-unit class. Our HS doesn’t do any DE at all…your suggestion is a good one to have a person at the HS sign off on it but that’s not something that our HS’s administration will do (my DH already asked about it). They’ve said basically, “You’re welcome to do that on your own if you want.”