The logging in instructions for the Class of 2026, with respect to the "Plebe Kit", very specifically state "Plebe Candidates entering with the Class of 2026 are required to bring with them the EXACT items listed below by quantity, size, and vendor. These items are required for uniformity and no deviation will be permitted.
Based on that I would suspect that the Plebe Kit would be an allowable expense. Ultimately it is purchased from the USMMA NEX facility. How 529 purchases work I don't know. My suspicion is you would pay out of pocket to the NEX facility and then seek some form of reimbursement from within the 529 guidelines. I also see, again from the 2026 instructions, "The cost of this package is $654.37. Please contact the USMMA NEX with questions at(516) 726-6177 or email BEMUSMMA@nexweb.org
." I would verify the phone number and email with your specific 2027 instructions and perhaps make direct contact.
By the way, just my opinion, that plebe kit is a bargain, especially when you consider that it includes "... the EXACT items listed below by quantity, size, and vendor."