Will SAT Subject Tests Really Affect My Admission Chances?

Ok, we’re at a rural public high school which doesn’t administer the SAT II. (in fact the school only has 1 SAT testing date per year, probably sounds insane, it does to me)…it might sound crazy, but I asked the GC if my son should take the SAT II but her response was “he can, but you’re going to have to drive and I don’t know if it’s worth the drive…” I replied, ok, let’s assume it is, where can we go and what should he take? She suggested l look online or at the CollegeBoard website. So @skieurope & @happy1 thanks for this. I’m guessing we’ll probably either steer away from SAT II “recommended/required” schools or just explain our situation to those schools if they make some list.