Being late adds up to loss of learning:
· 5 minutes late every day adds up to 3 days lost each year
· 10 minutes adds up to 6 days lost each year
· 15 minutes adds up to 10 days lost each year
· 20 minutes adds up to 13 days lost each year
· 30 minutes adds up to 19 days lost each year
Being on time means no loss of learning
