What is the Canadian Language Benchmark (CLB)?
The Canadian Language Benchmark (CLB) is the national standard Canada uses to describe language ability, on a scale from 1 to 12. For immigration, your official test scores (IELTS, CELPIP, PTE Core in English; TEF or TCF in French) are converted to a CLB level for each of the four abilities — listening, reading, writing, and speaking. Your CLB level, not the raw test score, is what determines eligibility and CRS points.