LOCAL UPDATE - Sick Teacher's Must Provide Doctor's Note

The more than 800 teachers who were stricken with the blackboard flu on Wednesday must prove it.

Administrators are asking the teachers to provide a doctor's note by the end of the day Friday to confirm that they were in fact sick with the flu, saying no note, no sick-day pay.

The notes are a way for administrators to know if the teachers were sick, or if they just stayed away from the classrooms as a form of protest against pay increases for principals. The teacher's union is consulting an attorney in whether a doctor's note is really necessary.