The good news is that effectively, schedules 2 and 3 are empty now. COSEWIC has existed for a long time, and they were operating under a certain kind of assessment procedure. They reformulated their procedures to harmonize with the International Union for Conservation. They had species that had been assessed under an old protocol, but they had to be reassessed under the new protocol. Those have all been dealt with and are into the listing process or are listed under schedule 1.
On March 10th, 2009. See this statement in context.