There is research into this - and it seems to work well for elementary school kids, with a minimum of homework for older students. (universities are different).

There is research into this - and it seems to work well for elementary school kids, with a minimum of homework for older students. (universities are different). Scandinavian countries do this and always score well. AT least here in Norway, they also do not hold elementary kids back, but work with them appropriately. There is more than one way of gauging development and progress.