[concerned about politics]

The teacher’s union would throw a hissy fit, but you could rotate students in for “specials” (art, athletics, whatever would be cheaper done in bulk or need group work)

Our county had a home school support group. Once a week, all the families got together in a church. Parents volunteered to teach 1/2 to 1 hour classes. We had art teachers, music teachers, parents taught reading and math, etc. Everything a parent couldn't do or needed help doing was done there.
Eventually, the classes got so big, it had to split into two groups. It was a huge success. Parents appreciated the support they got from other parents.
As far as I know, they're still doing it. (My kids have already graduated college.)

[P.O.E.]

Excellent. All you needed was a cookie exchange to make it ideal.