Forest teaches "real" science, separate GSCE, not the arty "oooh look penguins they are pretty " at Bancrofts or Chigwell.
It's highly selective, which we w liked since DCS are fractional percentiles, DW & I don't like the idea of DCs being too much smarter than their peers.
Chigwell had fewer books in their library and of lower quality, not only than the sink comprehensive I went to, but than we have at home.
Forest had less emphasis on sport than Chigwell, Bancroft or St Aubyns. We liked that.
We spoke to a valid sample of Forest kids, and they seemed "nice", that got it an overwhelming number of brownie points. It seemed more relaxed than other schools.
Forest has a fine record for getting A levels is real subjects. Bancrofts looks good but when you strip out shit like Photography, is not so great. My personal metric is to subtract points for ever A level grade in a crap subject. That hurts Bancrofts badly, and utterly overwhelms the fact the head has a proper degree, since in spit of that he sanctions arty science GSCE and dippy A levels.
The chaplain at Forest and I have history, long story, but we have a sort of mutual respect.
The maths department includes people that I consider competent. My bar is very high, 90% of maths graduates fall below it. The other local private schools did not impress me, and St. Johns Buckhurst Hill is run by such a pile of shit headmaster that wne he said that he didn't approve of maths teaching beyond 12, I had to concentrate not to drop the creep where he stood.