Google Classroom is a free service for schools, non-profits, and anyone with a personal Google account.
Google Classroom is on fire this year! Just found their last updates here and, I must say, this is huge! My favorite is GC homepage organizing, finally!
Ah, yes, and now GC has a plagiarism checker. Stumbled upon this news: https://finance.yahoo.com/news/ultimate-symbiosis-unicheck-becomes-.... More - here: https://unicheck.com/blog/plagiarism-checker-google-classroom/
Google Classroom really needs plagiarism checker, so it's great!