I feel sure the more degrees teachers have, the better equipped they are to be successful in the classroom.
I also think that private school teachers don't make as much money as public school teachers and cannot afford to get what it takes to get those additional degrees.
I agree that better-educated teachers could mean better-performing students, but the private school teacher has more class time to teach than public teachers because there are far less discipline problems in the classroom. I'd be willing to bet that a large percentage of public teachers who are retiring do so because of constant discipline problems and what those interruptions mean, time wise, in the classroom. Private school students know up front if you become a discipline problem you'll be asked to leave. Also the parents are advised of this up front.
I'm tired of hearing we need better math and science scores vs. other nations. Our lower scores in any subject means to me that the student is probably not at the reading/comprehending level of the grade they are in. Reading should be the number one priority of every grade, but with all the social promotion we have, the low reading level student will never progress with classmates who can read at their, or higher, grade levels and should automatically be put into a remedial reading course until he is up his grade level. If started early enough in grade school this problem could be solved by the time the student starts 7th or 8th grade.