Every rink has its stars-- the girls twirling center ice, that all the little girls want to be like. The ones with the moms who seem to know what's going on. The ones with the "big" solos, and the "Good Luck at Regionals!" signs in the office window.
But a rink is a small world, with its own heirarchy. The girl who seems so amazing in your little corner of skating might or might not shine in a more competitive arena.
So how do you know--when does the 'switch' happen from local skater to bigger and better things? When do you go from one coach to an arsenal of coaches? Does your coach say something? Does your test or competition level have anything to do with it?
The easiest test is an honest assessment of your ability-- are you, in fact, the best skater at the rink? Are you winning or placing in competition? Do you have higher level and more consistent skills than the kids you are training with? If you are, if you're really the "best" skater at your rink, then you don't have anyone to live up to, or anyone nipping at your heels. This is not the best situation for a competitive skater.
We saw a huge jump in ability with our national dance team when they stopped training at home and started traveling to a rink where there were people better than them. Suddenly they couldn't rest on their laurels; they had to be as good as the people around them. If you're already better than the people around you, you need to find a more competitive environment, to give yourself something to push against.
There is no hard and fast rule about where this happens--as young as Pre-pre, as late as Senior. We recently had a mass exodus of Synchro skaters because they realized that our small program couldn't push them hard enough--they were already at the top of the heap. Some of them may be back; but some of them will find themselves skating better than they ever have.
If you are content, or even like, being the best in your rink, then good for you. You don't have to go anywhere.