$200 a day and 3 months off during the summer is not as bad as you think. the logical thing would be to try and get a teaching job closer to home for next year.
As a teacher, this kind of comment always makes me laugh. We don't really get 3 months off in the summer. I usually have nine weeks, during which I have to complete all of my continuing education credits. I also have been forced to change curriculum and classrooms each year for the past few years, which means weeks of moving and planning. However, as a veteran teacher with a Master's, my pay is closer to $400 a day.
OP, I know the type of stress you're feeling. I have been there. And the statistics they told you are true; usually only 50% of new teachers make it past year 3. However, this year is already half over. If you can hang on until the end, you can keep your license and maybe you can find a better situation.

Teaching is very much like parenting. It feels like an arduous, painful, thankless job...but it can also be the most rewarding thing you ever do.