Of course teachers are overpaid. I spend all day around them and can assure you they hardly deserve their salaries. I educate students who threaten to beat me up and have to deal with countless state and federal SPED mandates and I can assure you that I am overpaid.
The numbers clearly indicate so. $75k + lavish pension and benefits for a 30 hour week!
If you think it's a 30 hour week, you're delusional. They grade papers at home in the evenings. They have to be at school at least an hour beforehand to get things ready and often have to stay after school to help students or monitor carpool and buses or look after some kid whose parent is late getting them.
That "lavish" pension you speak of requires you be vested in order to receive it. You usually have to be there at least 10 years before you're fully vested. And if you decide you want to move and teach in another state, poof! you have to start all over from square one with your new state/district's retirement plan.