The ad, by DDB London, featured a young teacher bantering with a pupil, while the voice-over said: "You could earn 34 grand a year. The banter's not bad either."
The Advertising Standards Agency ruled that the ad could mislead viewers into believing that the starting salary for a teacher was £34,000.
It said that only around a third of teachers could be earning that amount by their late 20s.
TDA acknowledged that the teacher featured in the ad had a youthful appearance. It maintained, however, that it had not intended to imply that he was earning £34,000.
