As a school governor at a 'Good' secondary comprehensive school (with well above average results) I'm sometimes involved in interview panels. Most applicants seem to have got very average grades in the subjects they teach and/or lower second class degrees. I guess I find that surprising, and wonder how it impacts their ability to stretch the brightest. If you're a secondary school teacher, did you shine in your subject of choice when you were at school/uni? If not, does it matter? Does it perhaps even make you a better teacher?