Hi there,
The other thing that I don't thing has been mentioned on this post yet is that there is good money to be had in the business English sector, and also private tuition.
In England I found it hard to live on a language school's pay in London, where rent alone is astronomical and just stepping out of the door costs 50 quid. However in the country towns on the same pay it was much better.
What I did for a top up was private lessons for a reasonable hourly rate, and also group private lessons, even better financially!
Here's a post on
starting a teaching business.
And here's a second post on how to
get more students.
All the best
Shelley