I know a lot of people joke about moving to Canada, but I seriously won't be able to afford to live here. Lower-middle income and four children. I need to find another country to live in. I'm a high school math/English teacher. Any suggestions?
International Teaching is a thing, but your four kids may be an issue. A lot of international schools will pay for dependent flight and healthcare, but only for partner and one or two kids.
Nothing to say that you can't do it though. Math and English Teachers are fairly sought after, and the American Curriculum runs in a fair number of international schools. The country I'm in now (Jordan) has at least one large decent American school. You may have to broaden horizons, professionally (maybe look at what the IGCSE or IB has in common with the American system, and retrain a little). Also, the fact that you could do two subjects is good. My wife's a Secondary Maths Teacher (UK Curriculum), and we're looking at opportunities for next year.
Paywise, my wife's on the equivalent of $28k a year, and the school pays an accommodation and utilities allowance on top of that. The only downside is the countries - Jordan is decent (for a Middle Eastern country). Kuwait is a hellhole. Qatar and UAE are good for the money, but very restrictive. But that's just the Middle East - there's a ton of international schools out there. One head of Secondary we know has been in the country for about 10 years, so you can make a life out of it.
Edit: What I say there about Middle Eastern countries could be misinterpreted. Jordan has plenty to see and do, but the people can be rude, and women can be made to feel unwelcome. It's also pretty dirty. Kuwait is just a tip - nothing to do but shop and eat, and the Kuwaiti people are horribly racist. Garbage everywhere, Western women are made especially unwelcome, and... I could go on.
Check out
http://www.seekteachers.com/
https://www.teachaway.com/
http://www.teachanywhere.com/
https://www.tes.com/
(Though that last is I think more UK oriented?)
Second down-side, actually - the school you work for can be great or awful. My wife's workplace went from great to garbage in the space of 4 months, because of a new string of senior staff starting this academic year.