I thought, as a teacher, that was my job? Maybe things are different up in Scotland but in our education system, teachers facilitate the learning experiences for children and classroom assistants support them in this role. Otherwise I wouldn't have bothered going to university for four years. Its like when I go to my dentist (who is the OP here might I add), he has a dental assistant - I would be rather nervous if he handed the drill to her! As biscuit says though, this is the topic of another thread.
P.s. I am sure you park well.