In an effort to improve the availability of Red List training around the world, IUCN, in collaboration with The Nature Conservancy (TNC), has developed the online IUCN Red List Training course. The online Red List Training course "Assessing Species' Extinction Risk using IUCN Red List Methodology" includes all of the topics covered in a typical IUCN Red List Assessor Training workshop, with some additional lessons that allow the learner to explore some aspects of the Red List Categories and Criteria in more detail. The course structure involves seven modules.