I'm going to assume it's not. My classroom is used at the weekends by outside companies/tutors. I've come back after the half term break and they've: Eaten most of my fruit and nuts, which are kept in a sealed jar under my desk. Used all of the brown sugar I have in a jar in the office (Imagine the horror I felt when I went to make a coffee and there was no sugar - at all!) Used all of the white sugar my HOD brings in for the department Used all of the coffee that my HOD brings in for the department Oh, and they've thrown away/used all of/pinched my board spray cleaner. And written on every single one of my white boards, with ink that won't rub off. I've got the right ump (probably because I couldn't make a coffee!) Needed to rant, I know it's a bit pedantic!