Not weird at all. My middle dd went to Montessori kindergarten while I homeschooled my first for grade 1. DD1 came to all montessori functions and loved it. DD2 came to all homeschool functions. It was a very busy but fun year for everyone. The teachers didn't mind having DD1 at the school functions, but they knew her as she had been a student there for the previous three years, and DD enjoyed being a 'helper' at her old school.
Of course, I also had ds tagging along, too, but that was never a problem either.
I don't see any problems with your plan. Good Luck!
Of course, I also had ds tagging along, too, but that was never a problem either.
I don't see any problems with your plan. Good Luck!