Back in my high school days, 57-60, we had 2 girls in the concert band cornet section. One also played in the orchestra, who is still a friend. No one I knew thought a thing about it. We had only boys in the Marching Band. At Michigan State, there were no girls in the marching band at that time, but many played in the various concert bands. I didn't know any personally. These days in the KCB, we have 4 ladies in the 13 member trumpet section, with a wide range of age, but all good players, most products of Western Michigan U. Our principal has been a woman for many years who just retired from a long time area high school program. There are few problems in our 100 piece band, a supportive "family" for many years for my wife and I.