Cute...but unrealistic..
This is a cute concept, but there is no way a school (no matter how small or how remote) would hire someone who simply loves math to be their new math teacher.
Elementary school teachers typically:
Acquire a Bachelor of Arts in Education,
Must pass a PRAXIS I Exam,
Take a bunch of teaching classes (which focus on child development),
Pass PRAXIS II Exam successfully,
Complete their student teaching
And receive their Teaching License.