Heh, no, not at ALL common. In my previous school there are now 8 sections for science only in 11th. And guess what? On the admission form they make you sign I will complete 75% attendance. The other school, Hem Sheela, requires 80% attendance.
@seshu_ram Thanks for looking so much, I have found a school here, I will be continuing with that. Many conditions, but it will still do.