3 ms·What is L1, L2 Proficiency?by snowpid 3y agoWhat is L1, L2 Proficiency?jgwil2 3y agoL1 is first language, L2 is second, etc. Except for L1, which implies native proficiency, it doesn't say much about the level, just the order in which they are learned.snowpid 3y agoI think, the European A1, A2, B1.. is better way for descriping language proficency