Lift tickets and lessons should be in tiers. Most larger areas now have (or should have) scanners to read the lift ticket. It's easy to let the scanner/computer differentiate who gets to ride which lifts. Beginner chairs with only green runs should be about half the cost of a full mountain ticket. Simple marketing - simple pricing. If you want more mountain you pay more but if you want to save money you get a lower price.
Same for lessons. Beginner lessons should be CHEAP. Intermediate lessons should be MEDIUM priced and expert lessons should be EXPENSIVE.