I often commandeer chalkboards in my various classrooms while waiting for class to start. Unfortunately all my drawings always seems to end up being wiped off very shortly after class starts, even if the teacher isn’t using the board. Rather frustrating really. >w>;

I often commandeer chalkboards in my various classrooms while waiting for class to start. Unfortunately all my drawings always seems to end up being wiped off very shortly after class starts, even if the teacher isn’t using the board. Rather frustrating really. >w>;