When I first started my job our Headteacher called us SENapps (Special Education Needs Assistants Pupils and Play) think this is what it stood for, we were employed for 1:1 working. There were also TA's who were all Teachers Assistants. When she left the new head said it's not a recognised name and wanted all of us to be called LSA's as we were all part of the same team. TA's objected and wanted to keep it as TAs, however it now stands for Teaching Assistants. I think the only time a teacher in our school would refer to a TA as "the dreaded 'helper'" is if they really were a waste of space and as far as I know no-one has ever been called this, at least not out loud.