There are several AICC "Levels" (1, 2, 3a, 3b). These describe the complexity of the CSF (Course Structure Files). The AICC Level does not address the information that is transferred from the browser to the server. The Level of compliance is based on what features of the CSF a particular LMS supports.
Level 1: Basic structure of course, location, description, implied order
- Level 2: Level 1 + prerequisites for each unit + completion requirements
- Level 3a: Level 2 + more complex relationships allowed for prerequisites and completion requirements
- Level 3b: Level 3a + objective relationships. Objectives may be used in requirements/prerequisites