"This publication is the result of research carried out by The Historical Association and supported by a grant from the Department of Education and Skills. The project has been entitled T.E.A.C.H. (Teaching Emotive and Controversial History) and covers the 3-19 age range.

The National Curriculum for History and GCSE and AS/A2 specifications often touch on social, cultural, religious and ethnic fault lines within and beyond Britain. A premise at the start of this project was that many teachers often avoided controversy in the class room when focussed on history. At the same time, there is widespread recognition that the way many past events are perceived and understood can stir emotions and controversy within and across communities.

……..There was also an acceptance that emotion, sensitivity and controversy can be affected by time, geography and awareness. For example, an issue or person could have been extremely emotive and controversial at the time but no longer has such a resonance, or that something may be felt much more strongly in some places and among some groups and individuals than others, or there are issues that continue or now have contemporary significance or personal resonance.
Likewise the strength of feeling about certain issues can be affected by the age of the students
Thus there are historical issues that, at the time, aroused strong emotions and were subjects of great controversy . Simultaneously, there are issues that are emotive and controversial because they continue to have general contemporary significance or personal resonance for students"

- So the premise or the preliminary or explanatory statements of the document was that many teachers avoided "controversy" in the class room (for the many reasons touched upon in the report including age appropriate material) and then proceeded to examine if this was the situation or not and, if so, what steps could be taken to ammend it.

But certainly NOT

"Many UK schools removed The Holocaust from their school curriculum because it "offended" members of the Muslim population who claim it never occurred.