Roll-call app Node.js

Role call system prototype that allows teachers to keep track of students’ class attendance. Teachers should not have to go through a list of students and check who is or who is not in class. The responsibility to register attendance is shifted to the students who have to check in into the system themselves. Students should be able to check in with a special code provided by the teacher.

This is the scenario:

-the teacher enters the class room and starts up the system
-the teacher provides the students in class with a system generated code
-students have N minutes to log in to the system and check in by entering that code
-students must log in using same network as the teacher(admin), any other network will deny check in
-after N minutes the system times out, it is not possible anymore for students to check in
-at any time, the teachers must be able to create different statistics about single student attendance and entire class attendance based on the available system’s data, in tabular form
-a student should be able to see only the data about his/her attendance

mysql or mongodb database should be used for this connection.
would be nice to have it in a model-view-controller environment