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Highly Effective Schools Through Libraries (HESTL)

Web banner with the Colorado State Library logo and logos for the HESTL credentials 

What is the Highly Effective Schools Through Libraries Program?

Highly Effective Schools Through Libraries (HESTL) is a credentialing program with a dual purpose:

  1. To recognize outstanding school library programs and school library professionals.
  2. To provide guidance in school librarianship best practices.

A highly effective school library program benefits every learner in the school community. Highly effective school librarians lead information, media and digital literacy instruction, manage the school library print collection and digital resources, and promote a school culture of independent reading and lifelong learning.

The What Is a Highly Effective School Librarian? Information Sheet defines the five areas of highly effective school librarianship: planning, instruction, leadership, management and environment.

The What Is a Highly Effective School Librarian? Video illustrates teacher librarian impact with interviews of district leaders, school leaders, teacher librarians, classroom teachers, and students.

HESTL School Designation

Teacher librarians who earn the five credentials of Planning, Instruction, Leadership, Management and Environment are awarded the HESTL School designation, a joint recognition of the teacher librarian and school. View the current list of HESTL-designated schools/teacher librarians and school administrators who have been awarded the HESTL Principal Collaboration Credential.

Interested in participating in the HESTL Program?

HESTL Program Information: Teacher Librarians

HESTL Program Information: Library Paraprofessionals


Contact Us!

For more information about the Highly Effective School Library Program, contact:

Tammy Langeberg, HESTL Program Coordinator