Sorry to bump an old thread... but if you had any more doubts that you don't need to go on exchange to do well in VCE French, I've never been on exchange (although I have been to France on a family holiday), did not have the best teacher, didn't have a tutor and I got 50

(I know I sound kind of like a twat, but VCE French, much like most subjects, is as much about learning to respond to the given criteria as the actual knowledge and ability itself). The kids I met who had gone on exchange got very complacent and slack about studying and as a result, did not do as well as they could have, same with some kids who had tutors, who assumed that they could simply
buy proficiency in French. What matters is your work ethic (and moreso than other subjects, a strong work ethic in language studies is crucial), and really liking and taking an interest in French makes sure that you improve and at the same time, ensures that you don't burn out.
Best of luck with French. I really did enjoy it and was the subject for which I had the smallest, least stressful workload as long as you work on a consistent basis. It really opens up doors and the ability to communicate and make friends with a variety of people you would never be able to with just speaking English is an amazing gift. I hope that your experience with it will be as great as mine was.