well I'm not 100% on any med/retirements, but the job security is the same as any place and is nothing super special.
As for having off days when kids have off, that is completely false. Many times they are for parent/teacher conferences (2-4 times a year) and even if they are 'off' doesn't mean they aren't grading papers and going over lesson plans. They don't have the joyous summers you seem to envision. Less work in the summer? Yes. No work in summer? No
Wait a minute, the kids and teachers were off Monday, 2 weeks ago, for Martin Luther King day. That Friday before the kids were off again because Teachers had a "work" (i think it was called "profesional" day). This is a routine occurance throughout the year (A "professional" day occuring around a Holiday)
St Mary's School Calendar
Those days are the days they hold the parent conferences, as well as during the normal hours of the school operation.
As for a joyous summer, the Last day for Teachers is June 13th, the day after the kids get out (the 12th).
The Teachers report to school August 16th, 6 days before the students. A Teacher has 1 week less vacation (one day after the kids get off, and 6 days before the kids report back) than my Child.
That entire time that a teacher is free to do whatever, Average Joe employee is working his daily grind. It is the teachers choice to work Summer School or some other form of employment, but then he/she could also spend those 2 1/2 months picking belly button lint