Recently Google has updated the interface for how to share documents. By default documents you create are private. Changing the settings then defaults to sharing at your school. To allow parents and those outside of your domain to see your documents you need to take an additional step.
In Google Docs, Sheets, Slides, Drawings there is a Share button in the upper right of the document.
Notice that when you click on the Share button, in the Get link section, it says “Restricted.” Below that is “Change link to…” and it should show your school. Click on “Change link.”
Change the Building to a World
Notice the icon right that looks like a building. This indicates that the document is only shared on your domain, people at your school. You will need to click on the school name (notice the tiny triangle).
Change to Anyone with the Link
Clicking on the school name, tiny triangle, will give you a menu of options for the viewing permissions. Select the bottom option “Anyone with the link.” This should change the icon from a building to a world icon.
If you would like to share the document with parents, or others outside of your school, click on “Copy link” to copy the link to your clipboard.