That's where I obtained my information from. I'm not debating if teachers are overpaid or not, but on average the teachers in Wisconsin have a masters degree, and have been teaching on an average of sixteen years. So, a teacher just starting out or not having a lot of experience probably doesn't make nearly that much.
Some things they don't tell you include: state aid benefits for health care, they have a pension plan, and they don't work three months out of the year. Yeah, teachers are paid pretty poorly.