Cognitive Academic Language Proficiency (CALP) refers to the advanced language skills needed for academic success. It involves understanding complex concepts, engaging in critical thinking, and using specialized vocabulary in subjects like math, science, and literature. CALP typically develops over several years and is essential for students to perform well in school settings. Unlike basic interpersonal communication skills, which can be acquired quickly, CALP requires deeper cognitive processing. It is crucial for tasks such as writing essays, participating in discussions, and comprehending academic texts. Mastery of CALP helps students navigate the demands of their educational environment effectively.