What does CALP stand for in language acquisition?

• A. Communicative and Lexical Proficiency
• B. Cognitive Linguistic and Proficiency
• C. Cognitive Academic Language Proficiency
• D. Content and Language Proficiency

Answer: (C)

CALP refers to the ability to understand and use language in academic settings. It involves processing and producing decontextualized, discipline-specific language—think of the vocabulary, syntax, and discourse patterns you encounter in school subjects like math, science, or social studies. This concept comes from the distinction between everyday social language and the language required for learning in classrooms.

The correct expansion is Cognitive Academic Language Proficiency. It captures how students need to manage abstract ideas, reason with complex sentences, and follow subject-specific texts and instructions. This develops more slowly than everyday conversation and is a key focus for supporting ELL students in content areas.

In practice, you support CALP by providing explicit academic vocabulary instruction, sentence frames and scaffolds for complex thinking, opportunities to discuss and write about content, and practice with the kinds of texts and tasks students will encounter in school. The other phrasing options aren’t the standard term used to describe this classroom-focused language proficiency.