Beginner I: starting level, must place 1st or 2nd to move up
Beginner II: next level, must also place 1st or 2nd to move up
Novice: a slightly more competitive level, must place 1st with 5 or more competitors or 1st or 2nd with 10 or more competitors to move up
Prizewinner: the most competitive level before Championship. Must place 1st to move up
Preliminary Champion: must place 1st twice in order to move up
Open Champion: the highest level of competition
If you're at all interested, youtube some videos of the different steps. I find it interesting to see the steps put with the music in order to differentiate the subtleties.