A group is created to send messages to students from different classes for some common purpose. For Ex: School Bus carries students of different classes. So a Group with a name (Bus 1) can be created which has only students from many classes reaching school through it. In case of Bus breakdown, selecting the group and sending a message is far easier then selecting students from each class and then informing them. Any number of groups can be created depending upon the need. Process of sending message to a group is same as to Send General Message. Now instead of selecting Class or Students, Group will be selected.