I believe each style has alot to teach wrestlers of all ages. When my son started wrestling we were at a small school that had a folkstyle club, after folkstyle state our son wanted to keep going so I asked around our room. I had a ton of people tell me, "dont do freestyle it just teaches bad habits" so we stayed away, then the next year we found a new club and a new attitude. My son started wrestling at age 4 did freestyle at age 6 started greco at 8, its a fun time of year for him, its like a new sport almost and he uses techniques from all 3 in his folkstlye matches. I think for those kids who spend the entire year in the wrestling room it gives the wrestlers a much needed change of pace. The most important thing is to keep them wrestling and for us freestyle and greco gives a change of pace and teaches some different techniques that he uses all year..........Just my two cents