I went to uke camp in the Columbia River Gorge about a year ago, having been playing for about a year.
The teachers were;
Gerald Ross: Swing is the Thing and A Blue Lagoon and You.
Aaron Keim: Vintage Jukebox
Paul Hemmings: Ukulele Big Band and Bebop ‘n’ Blues
Jere & Greg Canote, Old-Time Ukulele String Band
Nichole Keim, Ukulele Jumpstart for Beginners.
Here was it said in the band camp's FAQ:
Q: What skill levels are required for each type of band?
"The Jump Start for Beginners is designed for complete beginners and those with very little ukulele experience. All you need is a desire to learn and have fun.
"For all of the other bands, anyone with 2-years of playing consistently should have no difficulty. All classes require that students be able to change between simple chords without hesitation. For example, C, F & G7, and G, C & D7 (I IV V) in a few keys. The faculty recognize that there will be a range of skills in class and usually provide different parts to accommodate the students."
I spoke about my experiences at some length elsewhere, but the gist if that is, I was fine for the ole-time music band taught by the Canote Brothers, no problems. The be-bop band, taught by Paul Hemmings? I struggled to keep up, and couldn't. Fortunately, he was a great teacher and knew some of us weren't ready, so we got to pick simple parts to go along with the players who knew what they were doing. We had guys who could transpose keys on the fly, and who had no trouble doing Thelonious Monk's "Straight, No Chaser."
Hemmings had taken classic bebop tunes and scored them for multiple ukuleles. In keys like Eb, and F, thank you very much. Ever see a B-flat-thirteenth sharped-ninth chord? Not really that hard to play, once somebody shows it to you, but C, F, and G7 ain't gonna do the trick when you get into serious jazz ...
Upshot of this is, choose your classes based on what you can do, or maybe almost do. A little stretch is fine, but dropping into a full split cold? Not so easy ...