Yeah, no. Schools could be better, yes, but the literature does not indicate that tracking improves outcomes for smarter kids. What it does indicate is that tracking hurts outcomes for the rest. Tracking is, I posit, therefore a bad thing.
As an aside, the probability that any given person posting here is actually 3-4 standard deviations above the average is small. I had the best elementary-school test scores in the town in which I was raised (pop. ~20k), and I doubt I am 3+ sd better than the mean.