What is the best free LMS for schools which have accounts for parents, students, and teachers?
Thanks for sharing this information with us.
So, answering to your question, it is difficult finding a platform for free that accomplish with the minimum requirement that the education field required, but not impossible.
Paradiso Free. This LMS has a variety of features: gamification, social learning, multi-tenant, certification, etc. A great LMS for small businesses, but not a good choice for larger ones. It allows a maximum of 50 active users.
My recommendation is using Paradiso LMS, free version, they can give you enough tools to satisfy your education services.