What I'm going to say will probably enlighten you.
The 2003 International Adult Literacy and Skills Survey that Statistics Canada refers to was based on four tests, not study levels. Based on the results of those four tests, Levels 1, 2, 3, 4 and 5 were established. Levels 3, 4 and 5 are equivalent to literacy. Below those levels, we're talking about functional illiteracy.
The four tests concern the following areas: comprehension of prose texts, comprehension of document texts, that is charts and tables, numeracy and proble-solving or analytical reasoning. The tests were administered to 23,000 Canadians—this is an international survey—and, in view of the fact that there are fewer Francophones, the Francophone sample was increased in order to establish comparative statistics.
It's not only the study level that determines this; it's the results based on the four tests administered by the International Literacy Survey.