Some startlingly unpleasant responses here to a perfectly valid question. Molly, from my own viewpoint - the wost teaching I came across in 30+ years as a teacher was at a grammar school. The kids were so well-behaved that the teachers could be lazy ie set boring work for the sake of it, knowing that all the kids would do it and learn it for a test as well. In a normal school, or a tough school, fist fights break out if the work isn't interesting - and even then they might break out anyway! Plus, most senior staff are lazy and crafty, and if you have a problem with kids they will say 'oh but the work wasn't interesting enough' quick as a flash, so you have to be on the ball with your teaching if you want them to support you.
Ofsted inspectors only see what they see on a visit, 'nuff said.