The rating system throws people off. Remember, the best rated movie will have, in the aggregate, the most stars. For each criteria think "level of goodness". A 5 means very good for each rating criteria while a 1 means very bad. Thus, if you are rating the sex or violence in a picture a 5 would mean there is very little of either and not a lot. The 5 in these cases is not a quantitative measure but a qualitative one. Thus, the movie Rambo II would not get a 5 for violence for that would mean it is good. Remember, level of goodness. If you don't do this then the overall rating is messed up. That is, what might be a 5 star movie suddenly becomes a 3 star movie because the overall rating is the average of all the stars you assigned the movie. If you gave the sex and violence a 1 for the movie because you thought that was a quantitative measure then you've just criticized a movie you ought to be commending.