I can understand your angst. I have pondered on qualifications appropriate for a teacher or lecturer for some time now and I seriously wonder if a first class degree qualification may be too high a qualification to teach in a school or FE College. A person of that calibre might be academically 'unstretched' teaching even at A level or equivalent. If so, the impact on performance in the classroom might tend towards casual. The desire to teach and the ability to teach are IMO., at least as important. Obviously a teacher or Lecturer must have appropriate life skills, experience and qualifications to do the job but at what levels and HOW, do you make a determination of what is appropriate?