The Lewis School of Princeton, located in Princeton, New Jersey, United States, serves students who have learning difficulties (dyslexia, dyscalculia, dysgraphia, delayed auditory and visual processing,[2] and nonverbal learning issues[3]).

The clinic functions as the diagnostic, language and learning performance unit of the facility.

The school's continuing mission has been to help those students who are underserved in their mainstream education.

The school has been consulted by clinicians from such notable facilities as Jefferson Memorial Hospital Clinic and the University of Pennsylvania in the areas of multi-sensory instruction and language based learning differences.

The school is housed in the historic Princeton mansion, Thanet Lodge, also known as Greenholm or the William Libbey house after the noted Princeton University archaeologist who built it in 1902.