Thats one of the reasons I got interested in this thread...
The most important thing I teach on this subject, in my opinion, is the choice and education behind the choice. Are you going to fight back and defend yourself or are you not going to resist? There are a bunch of people (probably most people here) who will tell you to fight back and defend. There are also a bunch of people out there that would have you not resist, hoping that you won't be hurt as much. The thing is, neither group of people, nor myself as the instructor, has to go through what you will go through, if you are in that situation. Therefore, we should not be making your decision. You need to make that decision, and you need to be ok with that decision, because you are going to live with the consequences, if you get into this situation. While I cannot tell you what decision you should make, I can tell you that the worst time to make that decision, is when you realize you are in the middle of this type of situation.
I encourage them to spend some time thinking about and researching these issues. The goal being to decide how you want to respond if you are ever in such a situation. I would encourage them to read articles and studies similar to those presented here earlier to use in making their choice, study both sides. I want them to be educated and to consider how they want to respond from an educated point of view. Make a plan and know how you want to respond, before ever getting into such a situation. I also encourage them to be open minded about their choices... as they get older, as their situation changes, as they learn more... their decision may change as well. Just like we plan fire escape routes and evacuation routes, we should choose how to respond in this type of situation.
Once you get that situation figured out, you need to figure out when and how much. If you are being raped, and you reach out, grab a pair of scissors and stab the guy, causing him to bleed out and die... thats one thing. If you are at a house party, and someone leads you gently by elbow, and you reach out, grab a pair of scissors and stab the guy, causing him to bleed out and die... that is another thing entirely, even if the touch was not wanted, or even if they were leading you closer to the bedroom door to possibly isolate you. Deciding how to respond at different points in the escalation of events is also very important...
Finally, reserve the right to change your mind. If you made a decision on how to respond... and you get in the situation and it isn't working for you, you can change your mind. Especially, since a lot of these things happen on dates... where you were ok with doing this much, you thought. You can change your mind at any time, and have the right to do so. Maybe holding hands was ok last night, but tonight, not so much. You have the right to change that decision and that line, just as much as you have to change your mind about resisting or not.
In the end, there are choices you need to make. You are the one that will deal with the outcome. Take some time, get educated and make the choices you need to make, before you have to make them. While you can ask for, and will get other peoples opinions on what you should do, realize those people don't get your consequences. You need to make your choice.