Absolutely not stating that all small schools have poor coaching, don't get it twisted here. What I'm saying is that on average, the coaching received at a larger school is more solid and there's several reasons for this, namely the difference in pay between the large schools and small schools. I can tell you there are several coaches that have left smaller schools for larger because of opportunity to put kids into the state finals on a more regular basis (an issue that would be resolved with class wrestling), just as another reason. Put up a poll and see why coaches move from smaller schools to larger. I think it'd be interesting to see the reasons given.
One obvious reason that hasn't been touched on is the fact that there aren't as many teaching jobs in small schools, so if they can get a great coach in place, he's often not able to be in the building to teach all day. This makes a big difference in the ability to recruit and retain wrestlers. And the larger the school, the more potential openings to get more coaches in the building and have more coaches period. I've been doing this for a decade and believe it or not, not every athlete I've coached has liked me or my style of coaching or wrestling. But I work hard to hire assistants who will stay in the same philosophy but have different strengths and expertise that allow us to be a well rounded staff. This catches many of the athletes that may not jive super well with me, but they really like being coached by one of my assistants. This opportunity is often lost at a small school where there is only one assistant stipend, if that. The ability to recruit and retain assistants is a HUGE difference between the different sized schools, eliminating even MORE of their potential athlete pool.
I'm not trying to knock the coaching at small schools, I've known many awesome coaches at smaller schools that are still there. It's a labor of love for them and they are killing it in their own right. When they find their group of committed individuals they do great things and are just as successful, I'm just pointing out that it's a lot harder to get and keep a great coach at a small school with a limited budget. Of course it happens, but far more often it doesn't happen. I feel as though you point out the successes of a Mater Dei, Oak Hill, or Wabash, but neglect that there are dozens of 1A and 2A schools like Taylor Kokomo or South Vermillion that haven't had an individual qualify for state in years (Y2 just posted a bunch of this data, but I don't have time to review it all) and this year didn't even get a Regional Qualifier. I know the data suggests that 1A schools are qualifying the right numbers of individuals, but they're all from the same schools that have been able to buck the overall trends. That doesn't make it equal for all individuals.
With regards to weight training, most small schools don't have a strength coach on staff so they're at the mercy of their own coach's expertise or the internet research they can do(which will be extremely variant from place to place). Is it a huge difference? Perhaps not, but these things all add up. Even if the kids from school A are only getting a 10% boost from their weights coach and a 10% boost from their practice partners, that's a 20% advantage (assuming they have equal coaching).
I agree the crux is whether or not each INDIVIDUAL is on a level playing field, and I'm arguing they're not. A kid that grows up at Small school A with a coach that is part time because he owns his own landscaping company and can't afford to take off to help during the offseason and there is no local club and they have to drive farther for tournaments and they have to pay for hotels to stay there and compete and drive to a larger city to train just so they can have a practice partner that's able to push them is NOT on an equal playing field to a kid who grows up at Large School B where the coach is engaging athletes year round, they start wrestling in a club learning the system at the age of 4-8 and can train locally with quality practice partners whenever they please.
Can these odds be overcome? Most definitely! But they are not on an equal playing field to start. It takes MORE sacrifice to succeed in our sport when you grow up in a small school system and that is by definition, not equal.
Don't get me wrong, I'm not saying these guys from large schools aren't working hard or sacrificing, they are and you don't succeed without it in our sport. However, there are inherent advantages to growing up in Avon/Brownsburg, Evansville, etc; compared to growing up in Fairmount,Salem, Bloomfield etc; that make the sacrifices slightly less (fewer hotel costs, a quality local club, more academy options nearby, etc;).
I don't think anyone is saying that school size is the only factor here, it's definitely not, and I'd argue not even the biggest factor, but it's what everyone is used to using to classify schools, so there's the argument.