Whose idea was this?....teachers work hard enough without having to work a shift pattern, when would you mark books, do your planning, look after your own children. Teachers have enough to do without shifts being brought in!, unless your going to pay over the odds, but i doubt it. This is not an oil rig !, it's education!....children are the future not lumps of meat to be thrown around, we already test out children too much with assessments etc.
If this is implemented be prepared for a mass exodus of teachers.