Class management tools

As a free tool app, class management tools has the following functions
1. Users can create their own class, set their own class name, logo and set big events (for example: graduation)
2. After creating their own class, users can add all the student information (name, student number, birthday and telephone number) of their own class through the student management module
3. Users can quickly obtain the registration information of students in the student management, or click the button to call the students