Any way to make the installer non-persistant, like a kiosk mode (for students)?

Is there a way to make the installer create a non-persistant “guest” account to a hard drive?
I would like to use nomadBSD as the OS on some student laptops at a school, and I would like them to behave like kiosks, allowing students to do some work with Firefox/Libreoffice and then when another student signs in/reboots, all the data is cleared. Previously we had guest account sessions using Ubuntu 16. Can this be done easily? Any help would be appreciated.