Master's in Music Education (choral emphasis) vs Choral Conducting

If someone has a BM in Music Education and a single subject teaching credential, which graduate degree would make more sense if the masters were to be that person’s terminal degree? This is for someone who is interested in teaching voice and choirs both privately and in the public school system? In looking at the curriculum, the choral conducting degree seems to be more performance directed but I am not sure which would help one become a better teacher. If anyone can explain the difference between the 2 degrees, I would appreciate it.