They are two separate entities; one being a public non-profit school and the other being a private school (possibly for profit). check your filing papers and you may be listed as only being associated with the one school and not both. That is your legal way out of it.
Just a couple of questions: If you are having a fundraiser, are they distributed to your grades only and the Pre-School and Pre-K are left out of it?
If so, then there is nothing that is stopping those parents to organize and have their own fundraiser using the same company. Parents with kids in different school split their sales between their kids, so it would be no different here. However, if your fundraiser is distributed to those students, but they do not benefit from the sales, then that is not fair.

I would assume that y'all have different tax id numbers for starters. (just thinking out loud here... ) Do y'all work together in any way? (besides just being in the same building). It doesn't sound like a good idea to me either. I would tell them that you don't want to mess with your 501c3 status. sorry I don't really have any good advice for ya. Good luck. maggie

Help! I am a board member of a PTA group of a large public charter school. The school is also home to a private PreSchool & PreK school. The private school wants in on our fundraisers after seven years. Our PTA is against this, for several reasons. (I won't list them, it would take this whole post.) Does anyone know any legalities or issues that may help us to bolster our position with the school? Some in admin are for it. Any advice or experience in this area would be greatly appreciated. Thanks.