Well, I am totally not clear on what kind of National Championship it is and who exactly gave out the award. Doesn't different entities proclaim prep National Champions?
Putnam Science Academy does have a solid tradition, and 38-0 is 38-0. However, the only 2021-22 schedule I could find did not include the usual Prep School powerhouses such as Montverde, IMG, La Lumiere etc.
In fact, they're not in the USA Today prep poll.
https://usatodayhss.com/2022/top-25-...-march-15-2022
Regardless, Claude is a very impressive recruit.