When in my career is a good time to start a family?

I suggest that you start your family when you are already employed, enroll in an MA program while teaching as well. You can always apply for a leave of absence once you already have children, because if you earn while waiting for them to arrive you will be financially stable and be less stressed in the process. If you are not going to teach because you are waiting for your children to arrive, you might get frustrated. And the exprience you will have in teaching will be in any way helpful towards raising your kids. God Bless!

I'm not sure how it works where you are, but where I was you had a temporary teaching certificate for your first two years after graduation and then after you had a certain amount of hours of teaching you were evaluated for a permanent teaching certificate. The temporary certificate expired every two years, so you had to keep renewing it if you didn't apply for the evaluation for the permanent certificate. Once you had the permanent teaching certificate, you didn't have to worry about evaluations AND it was much easier to get a job. If you have the same sort of system, I would work until you get the permanent certificate first, then take as much time off as you want to have children. It is also very easy to work on a masters while you are teaching - where I was most of the courses were offered in the evenings just for that purpose. You could get started on it while you are off from teaching with your kids and potentially finish it even after you go back to teaching. From what I understood while I was teaching, special education teachers are always in high demand. I don't imagine you would have a hard time getting back into the field if you have previous experience.

when ufeel ready

Actually, once you start a family, you don't feel like doing anything else, the time spent with children is so beautiful and busy that you don't get time to thik, so I'd advice you to first finsh your masters. A break is also very distubing, one tends to push it (studying further )to the back.