CELPIP stands for Canadian English Language Proficiency Index Program. 

The Canadian English Language Proficiency Index Program, or CELPIP, is a tool for assessing listening, reading, writing, and speaking skills in English. Paragon Testing Enterprises, a division of the University of British Columbia, administers the test (UBC).

Paragon is the only organisation in Canada that provides certified English proficiency examinations for Immigration, Refugees and Citizenship Canada (IRCC). CELPIP-General and CELPIP-General LS are the two variants of the CELPIP test. 

CELPIP-General is for individuals who might need confirmation of English language skills when applying for permanent resident status in Canada through the Federal Skilled Worker Program (FSWP), Federal Skilled Trades Program (FSTP), Canadian Experience Class (CEC), Start-up Visa Program, and various Provincial Nominee Programs, or when looking for work.

For Immigration, Citizenship and Refugees there are two approved English language tests in Canada: IELTS General Training Test and CELPIP-General: International English Language Testing System. 

CELPIP-General LS is for persons who need to prove their listening and speaking skills in order to gain Canadian citizenship. IRCC recognises the CELPIP-General LS Test as one of the two recognised English languages for Canadian citizenship.

Paragon Testing Enterprises retired the CELPIP-Academic Test in June 2015 after acquiring the Canadian Academic English Language (CAEL) Assessment.