Here is the skill-scale Camp of Champions uses.
Can easily link turns, rides/skis blue rated runs in the winter. Never ridden a jump, rail, box or half pipe before. Ready to start riding small jumps, rails and boxes, and/or learning grabs.
Comfortable riding small jumps (10 - 15 ft), performing grabs and sliding on “ride-on” rails and boxes. Ready to start learning 180's, tweaking grabs, jumping onto flat rails/boxes, and riding the half pipe by learning kick turns on the walls).
Comfortable spinning 180's on small jumps, tweaking grabs, jumping on rails and boxes and turning on half pipe walls. Ready to spin 180's on medium jumps (15 - 30 ft), learn 360's, jump onto down rails/boxes and getting air in the half pipe.
Comfortable spinning 360's on medium jumps, sliding down rails and boxes, getting air in the half pipe. Ready to learn 540's on medium jumps, grab while spinning, spin on/off down rails/boxes, slide kink rails/boxes, and how to maintain consistent speed and amplitude in the half pipe.
Comfortable spinning 540's on medium jumps, spinning on/off rails, sliding kink rails and boxes, and maintaining consistent speed and amplitude in the half pipe. Ready to spin 540's on large jumps (35 - 50 ft), learn to spin 720's, spin on/off kink rails, start spinning in the half pipe.
Comfortable with 720's on large jumps, spinning on/off both kink and down rails, spinning in the halfpipe. Ready to learn 900's and up, take spins to X-large jumps (50+ ft), switch spins on/off rails, connect multiple spins in the half pipe while maintaining speed and consistently high amplitude.
Guessing level 7 is pro/very good.