This seems like a classic example, where the poor new teacher has to just acquire knowledge by some process akin to osmosis. I think that too often in schools knowledge is assumed rather than explicitly communicated. Strange when you think what the raison d'etre of a school is.Most of the time this is due to everyone being so stressed and overworked that they don't have the time. Occasionally it is deliberate and a bullying tactic. Failing to pass on information and then taking action against staff for failing to act on the information is an example. When was the last time that you had subject specific CPD, out of interest?