
A (9/10) Exceptional, rare, highly enjoyable and hugely effective at whatever it's trying to do. Perhaps something not quite executed to perfection, thereby preventing it from attaining the highest grade. Very highly recommended.
A- (High 8/10) Pretty damn good. Not worth an A-film but better than a B-film. This is why - grades are nice, because they give good flexibility. A- suggests the film is A quality but with certain, relatively minor, blemishes.
B+ (Low 8/10) Anything from here above is very good and is highly recommended.
B (7/10) Nothing which is just a B is shortlisted for year ending awards. Still it's a good grade which suggests that the film was enjoyable and has much to recommend it, especially for fans of the genre or talent involved.
B- (High 6/10) An above average film but one with enough flaws that they detract from the picture. Unambitious, well executed films may also wind up with this sort of grade if they do exactly as promised in the poster, but without going for anything with enough depth or uniqueness to warrant a higher grade.
C+ (Low 6/10) Slightly above average picture that does not really distinguish itself from the competition. If you're stuck for something to do then you could find worse.
C (5/10) Getting pretty dodgy. Some redeeming features but generally a disappointment.
C- (4/10) Little to recommend now. Very mediocre.
D+ (3/10) Some serious problems. For complete die-hard fans of the talent involved only, and even then they must take caution.
D (2/10) Just not worth the effort at all but perhaps there's a feeling that the film is not an abject failure.
D- (1/10) When films are getting this bad there is very little to choose between them. An awful, awful film but perhaps not offensively bad.
F (0/10) Atrocious. Nothing to recommend it at all. Avoid at all costs. Probably offensively bad. Very rare I've seen such a bad film. Definite "walk-out" standard, which recalls the old critics' joke, 'I saw it on a plane and still wanted to walk out.' One example would definitely be The Matrix Reloaded.