My university requires all written work (essays, reports and dissertations) to be submitted electronically in Microsoft Word format. At my previous university, PDF was also acceptable (in fact, recommended).
In the UK, where I study, assignment length is determined by the number of words (not pages, as is usual in some countries).
As a LibreOffice user, submitting in Word format regularly results in formatting issues for which I can lose marks. The university has sympathised with this, as well as my ultimate preference of being able to use LaTeX, but insist it is not possible to accept PDF files because they can't easily do a word count.
Looking at other UK universities, it seems that a majority accept PDF submissions either exclusively or in addition to other formats. How do they deal with the issue of assignment length?