Welcome. I find it very informative here. I like to learn all the ways different gyms ad countries do things. I am from New Jersey in the US. Your beginer levels go all the way to nationals? Is that what a 1B is? The most common beginer level is NJ is level 4 and we only compete to states. As you hit the higher levels the go to regionals and nationals.
No beginner levels dont go to nationals... level 1-3 are seperated into A B C divisions.
C is sort of a WAG rec stream as in they cant train over 12hrs all the way to level 10 and have their own state championships each yr but cant compete outside the state at nationals or anything, only in state. C kids do competitions and stuff but aren't gymnastically talented as such, talented kids move into B or A stream. For example 1C does 3hrs a week, 1B does 5hrs a week and 1A does unlimited hours but usually around 12hrs a week. C kids wont ever do anything harder than a backhandspring on beam, layout full on floor all the way through to level 10 if that makes sense.
'A stream' is elite here, it is seperate from all other levels and is only run at a few clubs. our elite system goes 1A, 2A, 3A international 5, 6 ,8, 10, junior international, senior international. If you dont go through A stream from 7yrs old or younger you cant really be an elite, so very different to your system i think. So here you can/ are considered an elite from say age 5 once you start 1A.
Now for B stream. B stream is basically your levels program where kids can go to nationals in levels stream. here you can go to nationals at level 7. our 1Bs/ 2Bs are between 6 and 8 and r working backhandsprings, front tucks of floor. handstands, presses etc on beam that sort of stuff. By 3B they are kipping, walkovering on beam, round off handsprings and saults etc. then they go to wat we call national level 4 training about 16hrs a week. and the C division goes to state level 4 and trains between 4 and 10hrs a week and doing much simpler skills (for example instead of kip they glide swing, instead of r/off backhandpsring their floor requirement is only a round off etc)
hope this clarifies it