Your link doesn't say what you claim it does. In fact, it goes on about how much extra work teachers do at home and on sundays.
You're proving my point: everyone wants something for nothing, and nobody stands up for teachers.
Re:The Case for $320,000 Teachers
by yummyfajitas on Wednesday July 28, 2010 @01:00PM
(#1554874)
Look at table 5. Over the entire week, teachers work about 2.5 hours less than other professionals, for the 9-10 months/year that they work at all.
http://www.bls.gov/opub/mlr/2008/03/art4full.pdf
They are also overpaid, particularly if you account for the value of all their fringe benefits, including summer vacation, tenure, defined benefit pensions, early retirement and gold-plated medical care (all of which are very expensive). In fact, they are usually paid right on the money if you look at salary alone - a 45 year old teacher with 20 years experience in NYC gets $83-95k/year (equivalent to $99-114k/year if they worked all year). That's not bad even for NYC.
http://schools.nyc.gov/Offices/DHR/TeacherPrincipalSchoolPro...
It gets even worse when you realize teachers tend to be low human capital individuals, at least compared to other college grads. Most likely they would be below average if they pursued other professions: http://www.ets.org/Media/Tests/GRE/pdf/gre_0809_interpreting...