You can get the address to the nearest UPS station and have them shipped there to hold for customer pick up.

I believe you would then only have 5 days to pick them up before they got returned.

Call UPS. 🙂

“Hold for Pick-Up” service is available free of charge at all UPS Customer Centers. Just call 1-800 PICK UPS for the UPS Customer Center location near your shipping destination and we’ll hold your package for pickup at the center you select.

There is also General Delivery at a post office near the school, but they only hold things for like 3-7 days unless you can make other arragements with them.

You might want to call the school and see if they will accept them at their general receiveing dock and hold them.

If you want to store the boxes before leaving, go to a storage place near you.