Unfortunately housing stock is low right now, so your choices are pretty limited. Belmont, Newton, Needham, Lexington are all towns that are known for their excellent school districts. However, a quick search on realtor.com resulted in no 4-BR homes priced at $1M or less; a small handful of 3-BRs could be found. Also you're probably going to need to forego the acreage in these towns in that budget and bedroom configuration. Another person mentioned Arlington; its schools are very good, and it's a great community. There's one house in your price range w/ 4 BRs on the market (just to give you an idea of what $1M gets you).

Natick seems to have good schools, and you might be able to find something in your price range w/ 4 BRs (and maybe even a little more acreage).

Since you're OK with being far away from Boston, look at West Newbury. Here's a house on the market that might check a number of boxes for you.