CALP refers to formal academic learning. This includes listening, speaking, reading, and writing about subject area content material. This level of language learning is essential for students to succeed in school.KV No 1 AFS Sambra is making constant efforts to connect with all its students. There is also a Compensation of Academic Loss Programme (CALP) in our school where extra classes are organized for the benefit of students who have missed out on their classes, due to various reasons..