Your district almost certainly has an electronic payment system set up. Use that.

If they don't, inform them that they should, wait a bit, then use theirs.

Kids have to buy prom tickets, pay for graduation stuff, pay fees and fines - nearly every district has joined the 21st century and offers a way to pay for these things.

You don't need to offer ApplePay, Cashapp, Venmo, Zelle, and every e-payment system out there. Go with what's been approved by the admin to be used.