I have a similar story. 7th grade, online science test, multiple choice and essay answers. When you click submit for the test, it shows you (in a javascript alert window) "you got X/Y correct. your essays have been submitted" and then POSTs to another page (which submits the essay). After I saw this on the first assignment, I had an idea. On the second assignment, i turned off my internet, and it still told me how many i got right and wrong, but then 404ed when it submitted my essay. So then, I modified my answers until I got them all right, plugged my internet back in, and submitted the multiple choice and essays, now with all the multiple choice answers correct.