From the DLA Bylaws:

Children's Services Division
To promote library service for children and children's librarianship within and for the public libraries in Delaware.

College and Research Libraries Division
To promote library service within and for the college and research libraries of Delaware. To promote cooperative efforts which serve to improve the quality and to increase the accessibility of the resources of college and research libraries.

Public Library Division
To promote library service and librarianship within and for the public libraries of Delaware. To cooperate in the promotion of general and joint enterprises within the Association and with other library groups, and to represent and interpret public libraries in contacts outside the profession.

Delaware School Library Media Association
To support and improve school library media programs in the state of Delaware. To interpret the value of these programs to school administrators, teachers, and the public. To cooperate with other professional associations concerned with the welfare of children and young adults.