So he can't teach his subject.. big deal. Learning about his travels to exotic countries is way more interesting :)
Terrible teacher, at least for secondary-school pupils. Ridiculously disorganised notes, way too complicated in his explanations, spends most of class saying, "When I was in Saudi..." I'd have failed my GCSE if I hadn't spent four days before the exam doing nothing but reading my textbook. I can't believe he's back. Again.