Ah, apologies; I didn’t know that. I was under the impression that it had to be both parents. I was merely using my own school as an example, where the percentage of students in school is apparently incredibly low (i.e. well under 10%); I appreciate that I am in secondary school/sixth form, however, and the situation is probably very different in primary school, where the students probably need far more care than those in secondary school. Out of interest, are you a primary school teacher or secondary school teacher?