School size matters for TEAMS not individuals. More practice partners wont make better practice partners and so on. If you took the whole student population of garret and swapped it out with the same number of kids from a large school there would likely be just as many good wrestlers from the new population as the old. Its just due to the probability of having and exceptional athlete within a certain sample size. Obviously the larger the sample size the higher the probability. Now this isn't saying that a big schools exceptional wrestlers are any better than a small schools exceptional wrestlers... This is determined by the effort and time they spend on the mat.
"The kids will start at a younger age and they will also choose wrestling over the other sports during the off-season. I would venture to say state qualifiers do more in the offseason than semi-state qualifiers, and semi-state qualifiers put more time in the offseason than regional qualifiers, and so on. Would you not agree?"
So your saying the exact same thing the other guy is... The way you get better is by investing more time and energy into the sport... not by simply being at a big school