Thank you so much, Indigo. Super helpful.

In addition to helping my own kids, for whom I advocate year after year (like so many of us!), I am also on site council at my daughter's elementary school. We are incorporating teaching students within their ZPD in the school improvement plan! I am semi-hopeful that having it documented will help our top learners (who may or may not be gifted, but there are plenty of academic achievers who are bored for sure...). Having some articles to back up what we are trying to do - especially the one you linked to that talks about what kids *don't* learn if they aren't challenged - might be really helpful when talking with the district and other parents.