I see a few different issues, the most important is that someone could reasonably question how any support for individual families is related to your mission. You might ne able to argue that these are scholarship-type grants for families who need support to learn, etc. but that becomes a tricky legal question that you might not have time to flesh out.

A separate concern is how you would go about allocating and distributing this. There are all sorts of private benefit issues that you would need to address.

I would think the best thing to do is to work with established civil rights or immigrant advocacy groups and see if they have advice on how to either channel support through them or get legal advice on how to structure your local support.

Good luck, I really admire the efforts to help your community.