Hello again everyone,
Got a message Monday from GC (very brief!) telling me whom to contact at school. The teacher who is in charge of administering the test, is the opposite of GC: extremely supportive of the idea! She gave him a booklet and S is signed up and did his first practice test last night. Not so good in CR, which we expected, but it was actually even lower than I had expected
Thank goodness his score was higher in M than expected
He will do writing today or tomorrow.
So, yes, everyone was right on. It is already showing us a more objective picture of where he needs to improve -- and where he needs to not get overconfident.
Thanks again everyone for your advice, I learned a lot.
By the way, another nice outcome of this thread: S has seen me on CC for his older sister but I don't think he realized until now the level of expertise --and the very personalized advice -- which are possible to find here.
Knowing him, his college search will be a very interesting one.
Allow me to say one final thank you.