CALT stands for Certified Academic Language Therapist. A CALT is not a tutor. This is a specialized educator trained to work with students who have language-based learning differences, particularly dyslexia. CALTs are experts in structured literacy, which is a research-based approach that systematically teaches the structure of the English language—covering phonology, morphology, syntax, and semantics. A CALT must hold a masters degree, complete 200 course contact hours, complete a minimum of 700 supervised clinical practice hours and pass a certification exam through an accrediting body like ALTA (Academic Language Therapy Association).