Dr S Bhatia

Yes, Tom,
it'll be a range over which we give feedback.....
after all a guy scoring 76% can't be significantly more brilliant than 75% chap
(i mean statistically more significant) 

each answer has a a feedback option but that is not used here....final grading done....and then a feedback

i guess there IS a module which is expected to be ready by oct
anyone wants me to test run it?

and i forgot to mention that each question will be likert type...that is having grades for various answers

hi Vijay
Another simple method is write out your whole formula on a powerpoint slide with images and everything......
select all....right click....save as image....
insert this image as question.....
openoffice.org has a program called 'math'....try it its free