After much googling, the answer seems to be "this month".
Apparently, a lot of schools don't realize they're supposed to treat sign-in sheets at the high school fairs the same way as sign-in sheets at open houses. You know, this really does screw it up for poorer kids, or those whose parents are new to the system.
Apparently, a lot of schools don't realize they're supposed to treat sign-in sheets at the high school fairs the same way as sign-in sheets at open houses. You know, this really does screw it up for poorer kids, or those whose parents are new to the system.