There are thousands of uncertified coaches supervising in high school weight rooms across the US. The head coach should have a protocol put in place for hiring assistants (CPR & First Aid, local school district required certs or permits, and background checks), but other than the school's head strength coach and maybe 1 or 2 Phys. Ed. guys, most assistants do not have the CSCS / NSCA / SSC stamp of approval.