This is a non-issue. The Explorers, a co-ed affiliate of the BSA (but is usually more vocationally based -- law enforcement, fire, medical, aviation, science, business, trades, etc.) has existed for decades in the US for boys and girls 13 or 14 and up. Basically the BSA is becoming pre-Explorers. My brother and I were both Scouts in the 70's and 80's. We both had friends, male and female, who were Explorers as well. My teenage daughters were Girl Scouts in VA up until 2012 when we moved to GA. Most Girl Scout Troops are school-based and when they are full they are full -- there were not enough volunteer moms to allow larger troops, so my daughters were not able to join Girl Scouts in GA. This route may have been a suitable alternative for them.