I once heard a teacher telling a year 3 class that her summer holiday would be spoiled if they didn't work hard at school. This was not SATS or exam related, but I felt that it was a bit of an unnecessary guilt trip
DS's class (Yr 10) were told by their teacher that "I'm stressed, therefore so should you be".
This was for SATS, by the way.
In that year, DS changed from a very sunny, happy boy, to a little lad complaining of tummy-ache EVERY morning, developed eczema and was utterly miserable, angry and crying at the drop of a hat. DS was very young in his year (end of July birthday) and is dyslexic so had a learning difficulty, but the parents of very able, top-of-the-class children in that class were also saying that their children were incredibly stressed too.
I'm sure some parents do put pressure on their children to do well, I just said, "Do as well as you can, and don't worry about it", and I know many other parents who also didn't pile this pressure on their children. In this particular case, the stress and pressure most definitely came from the teaching staff.