Jesus nearly all suburbs you can get a 400k house. Livingston, Cranford and Oradell have top school systems.
Cranford: https://www.trulia.com/p/nj/cranford/10-elizabeth-ave-cranfo... Caldwell: https://www.trulia.com/p/nj/west-caldwell/49-lane-ave-west-c... Oradell: https://www.trulia.com/p/nj/oradell/53-beverly-rd-oradell-nj... Teaneck: https://www.trulia.com/p/nj/teaneck/37-elmer-pl-teaneck-nj-0... Livingston: https://www.trulia.com/p/nj/livingston/1-stoney-hill-pl-livi...
Even Summit is $499k https://www.trulia.com/p/nj/summit/32-glenside-ave-summit-nj...