Minecraft Education Edition features multiplayer games that can connect using picture-based join codes. Each player in the same Office 365 tenant is able to host and joins worlds together in the classroom. For most users, it means the part of your email address after the @ symbol matches that of the other players. A single multiplayer game is able to host a maximum of 30 players, and is able to connect players across all supported platforms.
Even though the multiplayer experience was designed and optimized for classroom use where each player is on the same network, multiplayer across different internet connections is not impossible by making a few changes to your home network configuration.
There are some requirements for the best possible multiplayer experience. First, multiplayer is possible for those within the same Office 365 tenant. Second, players should have the most up-to-date version of Minecraft Education Edition. Third, each player has to be running the same version of Minecraft Education Edition to be able to host and join worlds together.
If you want to host a world, you can just click Play on the home screen. If you want to host an existing world, you can just choose an existing world to host from the View My Worlds collection. Aside from that, you are also able to import and launch a new one from the Library Collection. Then, click on a world in your My Worlds collection and then click Host.
If you want to make a new world to host, first of all, you will need to click Create New on the Play screen, and click New. Then, click the options you would like applied to your new world, and then click Host. If you want to host a game in-progress, you can pause the game and from the Friends tab, click Start Hosting and then click Confirm. If you want to join a world, you can click Play on the Home screen and then click Join World. Please enter the Join Code for the world you want to join by clicking on each picture in order. If you enter incorrect join codes repeatedly, you will get a warning after 3 failed attempts. After 5 failed attempts, you will be required to wait a few minutes before you are able to enter another one. This one prevents you from guessing Join Codes and entering sessions you are not invited to.
For those who are able to connect to a multiplayer game but start to see decreased performance as more players join your game, you can try these. First, the host computer is recommended to be at least 1.5 Mbps of bandwidth. Second, examine the network speed and make sure the amount of players is not overloading your network. Third, turn down the render speed to four chucks and turn off fancy graphics in the Video area of the World Settings screen. Fourth, for more information on how to utilize multiplayer with 30 people or more, please connect with other teachers in the community forums.