This refers to Moodle 3.4 6 from July 2018 2019 onwards
6. Click on the Save and display
...
button at the bottom of the page.
...
This setting determines whether the module appears in the list of modules for students.
...
When the setting Course visibility (see above) is set to Hide, the module is hidden from students, and invisible to all apart from staff with appropriate access rights (such as Editing Teachers).
...
An example of a greyed-out module in the Module Overview (on my Dashboard page) can be seen below where the module at the bottom is a paler colour that the one above it. This is greyed out to staff but will be completely invisible to students.
On the module page itself, the name of the module in the breadcrumb trail will also be greyed out.
When you Turn editing On,
In the Year End and Archive block (only visible to editing teachers)
the message appears: "Module hidden from students!"
If there are issues with students seeing the module, chances Chances are this is a simple case of the module being hidden from student view. The above process will make it visible.
...
