 By 2005, two-thirds of the membership were not heads but other senior staff, and the association also had a membership in the college sector, so the name was changed in January 2006 to the current name.The ASCL's membership is formed of headteachers, principals, deputy heads, vice-principals, assistant heads, assistant principals, business managers and other senior post holders in schools and colleges.There are also some members in other education posts of similar seniority.