There, there

Boo has a new teacher this year (as does Skibo, but his teacher is known to us).  He's new to the school, and young, but apparently highly recommended.  We were rather disappointed, therefore, to walk into Boo's classroom this morning and see that he had written four questions up on the board, and  in three of them, used "there" for "their".  How do you point something like that out?  Perhaps it is meant as a teaching moment, that he'll ask the students what is wrong with the questions?  We eventually talked to the principal, who promised to take care of it....

Yours, a little worried,
N