I came across this post as I was looking up a few things for my DAT class. This forum is great and I applaud all of you for contributing. I hope to post more often too.
I have taught at Kaplan for nearly four years and along the way have become a teacher trainer. I have taught many classes for them (SAT, TOEFL, GRE, GMAT, DAT, OAT, PCAT, and MCAT). It's a great part-time gig - low stress and flexible. There are Kaplan centers nation- and world-wide so if you move (or go to school elsewhere) you can still stay onboard and have a tax-deductible move. They offer affordable health benefits for part-time employees too.
I started off at $15/hr teaching and $7.25/hr prep (min wage in state A). Before the recent recession hit, they offered frequent and significant raises based on how successful you were with the students (as measured by student feedback surveys). Currently, many (but not all) Kaplan centers are under a wage freeze. After teaching an average of about 6-8 classes a year, they're paying me $32/hr teaching, $37/hr training, and $7/hr prep (min wage in state B).
nze82, sorry about the news. If you call back and ask about teaching SAT/ACT, they may be able to work you in. SAT teachers start at $18/hr teaching, $7/hr prep (min wage) in the center I work at. Usually you can easily cross-train into other classes later. Grad-level classes start at over $20/hr, and when you are certified to teach them, you still get the higher rate when you teach SAT classes.
Most centers will have you teach a full class before they let you tutor. My experience was the opposite though.
In general, I've had a good time working at Kaplan. The students are a lot of fun, and you feel good when they email you and tell you they got into Harvard etc. Relationships with center staff varies. I've had some center directors who have left me alone to teach, and I've had some who have taken advantage of me (with mostly scheduling). I've come to grips that at the end of the day, Kaplan is a business and they are very concerned with numbers. Teachers (and staff) turn-over frequently; the nature of 90th percentile people is that they have many other opportunities ahead.
The teaching gig is still pretty good and fits my needs as I work on a Ph.D during the day.
I'd be happy to answer any questions about applying to or working at Kaplan, here or by PM.