The library system at The Tatnall School consists of three facilities.
- The Ederic Library is located off the main lobby in the Beekley Building and serves students and staff in the Middle and Upper Schools.
- The Sedgely Library is located in the center of the Lower School and serves students and staff in Kindergarten through Grade 4.
- The Conner Library is located in the Myers Preschool and serves our younger students, along with the Preschool staff.
Tatnall's libraries offer computing resources and provide students and their parents with password-protected online access from home to many research databases and other information that support their academic programs.