The expanded mechanics are NOT included within the testing process.
It is on the individual associations to cover any/all mechanics beyond 2 man for use in the tournament.
Officials are listed as 'independent contractors' and in all circumstances are treated as such. For lack of a better term, the state issues "unfunded mandates" and assumes that the mechanisms for officiating are being taught correctly.
Personally, a few years ago I got into a heated conversation with a fellow official who developed his own 'personalized' 3 man mechanics. I told him, that that is NOT what the state mandates, nor is it what our association teaches! If officials from the associations that I am involved with were assigned with his officials, they would all request reassignment unless and until he complied with the NFHS mechanics listed within their publications.