CTLawyer chose to mention public schools. Situation that you mention about Jewish schools is akin to what was happening in US schools up to 19th century: educated women had only limited work opportunities, so they worked as teachers for low salary. Seems like you moving to other jobs is a similar economic decision. Still, it is somewhat sad: while Lakewood may be full of qualified teachers, I am sure there are lots and lots of Jewish children in the country that do not get good Jewish education. So, maybe there are jobs for Jewish teachers in less Jewishly-educated communities where you can both use your talents and support your family at the same time.
If you can find an area where they are, say, 15 kids you can teach, you can charge them modest $5K / child and seemingly earn more than you do now.