Our analysis reveals two major types of "Community of Learners" (COL) projects: instrumental and ontological. In instrumental COL, the notion of community is separated from instruction in order to reach some preset endpoints: curricular or otherwise. We notice three main instrumental COL models: relational, instructional, and engagement. Ontological COL redefines learning as an ill-defined, distributed, social, multi-faceted, poly-goal, agency-based, and situated process that integrates all educational aspects. We will consider two ontological COL projects into: narrowly dialogic and polyphonic.