The 57-year-old, of Canning Town, said: "Children would much rather have a good teacher who wore trainers than a bad one who was dressed like a businessman. Pupils learn best in an atmosphere where they feel comfortable and not in a corporate, office-like setting, so I really don't like the way that education is going." A stand-in head who took over this year issued a new dress code following complaints that staff were scruffy.