That's the problem with "private" schools. It costs an arm and a leg to attend the school and the staff gets paid with peanuts.
I used to teach at private schools. They were both residential schools so they expected even more out of staff than day schools do. We had to work nights and some weekends (with no additional pay). My first job in 1983 was at a Residential School for Children with Learning Disabilities. Being a very naive first year teacher, right out of college, I thought the $6,300 with room and board that they offered me was great, with out room and board it went up to $7,300. My public school counterparts were making $19,000 minimum. The saddest part of the whole thing is that the school got $37,000 for each student (even back then) and there were 120 students. We were expected to work one 7am to 11pm shift a week and one full weekend 7am Friday-11pm Sunday a week and we were expected to work the summer as well. Needless to say, I didn't stay there long.
The other residential school, while it payed better than that, in 1989 I was making $20,000, it also included weekends and evening shifts as well as summer. I left that school and went to a public school. No weekends, no evenings, no summer...better benefits and close to 1 1/2 times the pay.
Not to say that public school teachers make enough, but they do make more than private school teachers.
Teaching used to be a highly respected profession. It was when I went into it. I've been teaching for a long time now...to leave teaching would be a setback for me, but...the respect and the relatively low pay (for what is required and the continuous course work we must do) is not attracting new teachers.