The latest screamfest from the various teacher's groups is that they're "grossly underpaid." Well, no. First, let's not forget that teachers are paid for 12 months but work 9. Indeed the "standard" school year is 180 days. The standard man-year of work is 2,000 hours -- 40 hours across 50 weeks. But 180 days is 1,440 hours, not 2,000, or 72% of a standard work-year. And before you talk about "overtime" do realize that professionals don't get paid overtime. I never did as a professional writing code or building networks for other people. It's a professional job, and is exempt...