FWIW, I actually would be cautious of doing the skip (please don't think I'm anti-skip - I'm not!)
but in this situation, I'm one parent who would think twice about it, so maybe some of the things I'm thinking are similar to what your school is thinking (?)
anyway, if they are, if I put them out there, you'll have a chance to think through them

I'm also glad I haven't skipped any of my kids because selfishly I want them home as long as I can. I didn't necessarily feel that way when they were younger, but the older they get and the closer they get to their college years, the more I realize I want to stretch out their childhood at home just a wee bit longer.
polarbear