Tests A and B are equivalent versions of Nation
and Laufer's Levels Test (controlled production format) which
has been used by students all over the world.
Test C combines items from Tests A and B that are not cognate
with French (does not apply to 1000 level, whch is mostly non-cognate, or to UWL, which is mostly cognate).
If you score below 83% on any level, you can build up this level by working on the corresponding wordlist on the Linked Lists page.
Use the linked concordance and dictionary as learning tools. Or if your prefer, read e-texts using
VP to identify zone words.
It is not a good idea to do all the versions of the test at the same
time; do one version, and save others to test yourself after study.
References:
Validation of this test: Laufer, B. & Nation, P. (1999), A vocabulary size test of controlled productive ability. Language Testing 16(1), 33-51.
Rationale for Version C above: Cobb, T. (2000), One size fits all? Canadian Modern Language Review, 57 (2), 295-324.