That same amount of hours over a "normal" year with 4 weeks of vacation (note: nobody actually gets 4 weeks of vacation until they've been working for a while) is only 52.5 hours a week.
A lot of people put in way more than 52.5 hours a week, all year, and most of them don't have 4 weeks of vacation. Or benefits that match anything approaching teachers. Not to mention the job security and union benefits.
Not to mention when teachers are off for 10 weeks, they are OFF. Most people take a 1 week vacation and are answering their blackberry and email becuase they have projects that span the vacation.
Also where I grew up, teachers had exactly 184 teaching days a year. That is only 37 work weeks. What the hell? I work 49 weeks a year, they get 12 more weeks of vacation than me, so even at 11 hrs a day, they are coming out even more ahead of me.
And it sounds like your wife is the outlier, and I doubt she puts in 60 hrs/week every single week. And what about the guys who have been there forever teaching the same class off the same notes they worked out 15 years ago?