We personally never did it. I know all the teachers/principals we've had have been very much against it. I never really had a problem with them taking that stance - with one caveat. If, as teachers/principals, you are so against parents taking kids out of school for vacations (WDW,
DCL, or where ever), then it should be mandated at the school that there is to be no work of any kind given over the various breaks. If teachers are assigning all kinds of work for the kids to do over Xmas break, February break or Easter/Spring break...then why should parents wait for those breaks and pay the substantial premiums that come with it? It's not really a break then, and is not all that different from taking them out during a school week.