I'm not an experienced parent (just 1 toddler), but my best guess is that the amount of teaching can only be a positive (after all, teaching means you are spend

I'm not an experienced parent (just 1 toddler), but my best guess is that the amount of teaching can only be a positive (after all, teaching means you are spending time with them), but the methods are probably what could have a positive or negative effect. I have no evidence to support my opinion, but I personally would not be a fan of a very rigorous and structured learning program for a toddler, exploration and self-discovery are important to me and I believe they suffer in a highly structured environment.