For those who have not had Jo Kelleway for a maths teacher would not know, but for their benefit all will be explained. Jo is a puntual teacher that likes to get to her lessons 5 mins before the lesson actually starts. She starts shooing people out of her learning common around that time. She will start calling her class in at 3mins prior to lesson start time. Jo time is calculated using this formula:

Tj=Jo time

Tn=normal time that everyone else abides by

Tj=Tn-3 mins

If you are a student that appears on the top of the roll be warned you could be marked absent.

Tardiness is not tolerated.