Have you considered teaching privately?
The number of homeschoolers is SKYROCKETING. And a common misconception is that we teach our kids everything. Most of us farm out classes. The hottest ones are "school hour" classes (because we have our kids registered for classes already in the evenings, because that's when most businesses offer them... and that's when their friends get out of school for playdates/etc.).
In our area, which is WAY overpriced (cost of living is like that of hawaii or nyc), I know quite a few private teachers who are making 6 figure salaries. Teaching apx 20 hours a week (of course lesson planning and prep bumps that up to a full time job, but at least it's flexible).
- Overhead is low to non-existent if you set up shop in a community center.
- Some local community centers have whole days of classes (20-30 of them) offered by dozens of teachers. Because everyone knows about it / heads there... it helps with marketing. Cost around here is about $125-$250 per 10 week session per child per class.
((I've taught on a whim a few times, I had 40 kids total in 4 classes 2 days a week (microbio for the under 12 set) after word got out. So I made -gross- about 10k in 3 months, teaching 4 hours a week. I designed the courses, designed the testing, taught... no politicking.))
I don't do this anymore... (I'm homeschooling my son, working on my BA/ BS, in the middle of a divorce... aka have zero time)... Although I may again.
The market to aim for is Homeschoolers & those who want private schooling k12 but can't afford teh 15k-35k per year so are looking for supplementary classes, and CAN afford $500-$1500 a year.
It's just an option to consider.