The second clarinets never cross the break.
Every measure is numbered for easy rehearsing.
In many of the compositions, the first clarinets do not cross the break. The score pages are stapled so inside pages do not get lost. In most compositions, the first trumpet does no go higher than D. New releases include chord symbols in score. The music sounds professional, but is easy enough for your beginners to play. Phrases are repeated so it is easy to teach.