Ethical Dilemmas

Alright, I have a serious ethical dilemma. We have timeshare for a week in April, starting on Good Friday. School has (for some insane reason) been scheduled to go back the wednesday of that week. Bearing in mind that we (a) Want to teach our son, who has just started grade 1, to respect and obey the authority of his school, and (b) Have a son who is already reading fluently and doing sudoku in his spare time,WHO CAN TELL ME THE RIGHT THING TO DO?!? Wish I wasn't (still) such a nerd!