Carrd is a web application that you can use to create one page websites. Scenarios for classroom use include resume pages and getting to know you activities. The free account lets you set up sites at a subdomain of carrd.co, such as the quick and dirty page I set up at https://eduk8me.carrd.co/.
The editor is pretty straightforward.
Select your container and edit the content. Everything is on one page.
Their terms of service dictates that you must have parental consent for users under the age of 18, so if that will be a problem this site might not work for you.