Don't now how many people this affects, but this happened to us and it might to someone else.
Sam started a new school last june. We sent him with all his forms clearly stating 'Dairy Free Diet'.
A letter sent home with DS" last week stated that they only abide by dietary needs if accompanied by a letter from Paeds.
It appears as we were not told of this when Sam started school, as the letter goes out in September only, Sam's dietary needs were ignored and he was given dairy every day without us knowing.
We wondered why he was always ill.
So for goodness sake- if it matters to you- confirm it with every teacher you meet!