# Wiki types

There are three wiki types: Teacher, Groups, Student. In addition, like any activity, the wiki has the Moodle group modes: "No Groups" "Separate Groups" and "Visible Groups". This leads to the following matrix of nine possibilities:

| No Groups | Separate Groups | Visible Groups
--- | --- | --- | ---
Teacher | There is only one wiki which only the teacher can edit. Students can view the contents. | There is one wiki for every group which just the teacher can edit. Students can view the wiki of their group only. | There is one wiki for every group which just the teacher can edit. Students can view the wikis for all groups.
Groups | There is only one wiki. The teacher and all students can view and edit this wiki. | There is one wiki per group. Students can view and edit the wiki of their own group only. | There is one wiki per group. Students can change the wiki of their own group only. They can view the wikis for all groups.
Student | Every student has their own wiki which only they and their teacher can view and edit. | Every student has their own wiki, which only they and their teacher can edit. Students can view the wikis of other students in their group. | Every student has their own wiki, which only they and their teacher can edit. Students can view the wikis of all other students in the course.

Unless the group mode has been forced by the course settings, it can be set with the groups icons on the course home page after the wiki has been created.

- A teacher can always edit every wiki in the course