Finally the principal decided that something had to be done. She called all the girls to the bathroom and met them there with the maintenance man.
She explained that all these lip prints were causing a major problem for the custodian who had to clean the mirrors every night. Tu demonstrate how difficult it had been to clean the mirrors, she asked the maintenance man to show the girls how much effort was required.
He took out a long handled squeegee, dipped it in the toilet, and cleaned the mirror with it.
Since then, there have been no lip prints on the mirror.
“There are teachers, and then there are educators.”