I'm currently writing my first piece for a full orchestra, to be played by a high school orchestra and band. The piece is in E major, but it is somewhat chromatic and modulates to different keys for short periods of time (short enough to not change the key signature). However, the only clarinets the orchestra has are Bb clarinets, which would put their part in 6 sharps or 6 flats.
Should I write their part keyless and write in all the accidentals? If so, should I make this change on both the entire score and the clarinet part? Or only on the clarinet part?
Or is it better to keep their part in 6 sharps/flats? My concern is that the short sections in F major (as an example) would be cumbersome to read with all the naturals written in, and the sections that are in E major sometimes require double sharps, which make it harder to read.