Teachers love fonts! This is not always a good thing typographically and technologically. Even though I may be risking unleashing a new wave of font-heavy publications, if teachers are using Google Fonts, they at least won’t be full of fonts that are proprietary and trapped on the originator’s machine, but missing from everyone who receives the file.
Google keeps updating these fonts, and “you are free to to use them in any way you want.” They were intended for use on the web, but you can download them and use them on your own computer. Start browsing: