Kat's Rating Scale
Yeah, I originally used it to rate X-Men 'fics, but it works pretty well for Rescue Rangers fan-fics, too. (don't you think?)

My ratings scale, from best to worst:
 
6 claws--flawless story! I wouldn't change a single word in it!!

5 claws--Excellent! I'm bouncing off the walls over this one!  And maybe I'll e-mail myself about it.

4 claws--very good, definitely worth reading!

3 claws--good, solid 'fic. Nice job!

2 claws--fair, but I wouldn't e-mail myself about it.

1 claw--poor; not a "must read"

0 claws--this was so bad, I didn't even dignify it by finishing it!