Seems legit. Lay off this school though, okay? They have a very clear policy regarding absences: with classrooms as overcrowded as they are, any way to get a kid out of class short of murder is absolutely kosher. Any and all dismissal notes are acceptable, except those written in Play-Doh, feces, or that are sounded out on See N' Says. This kid is smart, but maybe not that smart. At this point can't you just have Siri call the school for you and pretend to be your mom? Siri is mischievous and loves nothing more than to lie to The Man.
Sources: WCVB Boston