* On one side, I bounced between school districts as a military brat and was often labelled "gifted". Usually this resulted in me getting extra education. When it didn't, I was often bored, sometimes to the detriment of my education.
* On the other side, in one district you had the lower math class, and the higher math class, and within the higher class each section would start with a pre-test to see what you already knew, and then split the class into two for that section. Once I slipped into this lesser "higher" class, I felt I could never move up to the higher/higher class because I never learned ahead enough to meet the needs of the next pre-test. (It never occurred to younger me to read ahead in the book. So much for being gifted.)
So I think the arguments you list ALL have validity and should absolutely be taken seriously. OTOH, I think current schools do a poor job of keeping talented or more educated students engaged, which can drag down things for everyone. I don't know what the answer is - you've done a good job of talking about why separate schooling is a bad solution - but I think the status quo is also a bad solution.
(that said, I'm in favor of raising educational opportunities for the poor and disadvantaged first, because I'd rather have talented-but-only-adequately-taught people in a world of adequately taught people than I would have a world of poorly taught people save for a few bright stars)
* On one side, I bounced between school districts as a military brat and was often labelled "gifted". Usually this resulted in me getting extra education. When it didn't, I was often bored, sometimes to the detriment of my education.
* On the other side, in one district you had the lower math class, and the higher math class, and within the higher class each section would start with a pre-test to see what you already knew, and then split the class into two for that section. Once I slipped into this lesser "higher" class, I felt I could never move up to the higher/higher class because I never learned ahead enough to meet the needs of the next pre-test. (It never occurred to younger me to read ahead in the book. So much for being gifted.)
So I think the arguments you list ALL have validity and should absolutely be taken seriously. OTOH, I think current schools do a poor job of keeping talented or more educated students engaged, which can drag down things for everyone. I don't know what the answer is - you've done a good job of talking about why separate schooling is a bad solution - but I think the status quo is also a bad solution.
(that said, I'm in favor of raising educational opportunities for the poor and disadvantaged first, because I'd rather have talented-but-only-adequately-taught people in a world of adequately taught people than I would have a world of poorly taught people save for a few bright stars)