With a vast amount of games and possibilities, players can play educational games/experiences such as simulating a museum, a historical event, etc. They could even be inspired to build/code their own games too. While Roblox is very thrilling, the community can be toxic and may hurt the wellbeing of a child. It is important for parents or teachers to keep a watchful eye of how a child interacts with others.
It's a great teaching tool. It teaches children how to script but I recommend that you tell your children to stay away from games like High School games, life in paradise' Boys and Girls dance club and Meep City. This is because there is inappropriate content on that game. Some games may be violent but if you die in a game your body falls apart but in some PvP games etc. Phantom Forces there is blood when you die.