@Natasha_Jay
#Alt4You
The current alt text is missing the punch line! May I suggest adding one more sentence:

The first panel shows a parent-teacher conference ("School Parents' Night") where a teacher is giving a girl's parents a failing F grade for their daughter. The second panel shows an "Astronomy Conference" where the same girl, now an adult, is being awarded a medal for her work. Above both panels is a speech bubble saying “This is for spending all your time staring into space.”