CLB is a Canadian Language Benchmark assessment of English language.

In this test, 12 benchmarks are organized in 3 stages. Stage 1,2 and 3. Each stage has a complexity of degree and demand
Benchmark1-4: Basic language ability

Benchmark 5-8: Intermediate language ability

Benchmark 9-12: Advanced language ability.

There are 4 modules of listening, reading, writing and speaking in it..