Oh and it's called 6th form cos you're in year 6 of secondary school. Which is also called year 12!
I think it's a hold over from some time in the past where the year numbers started over again at secondary school, as I understand you'd do your O levels in 5 form, then A levels in 6th.
Pays for Bruce Banner to have therapy and anger management to work through his PTSD and anger issues.