If you used productions or critics in your essay to a great degree, I suggest you read this from the Board because it is obvious your teachers didnt
http://www.boardofstudies.nsw.edu.au/syllabus_hsc/pdf_doc/english-adv-support-module-b.pdf
Best make certain that the marking criteria says something about word count. If it doesn't, you're safe because only what's in the criteria can be marked