Android : Class Participation Tracker using android

i was asked to develop a system in which a student gives an answer from a mobile device for every question paused in class. The system at the end of the lecture computes the individual performance measure and indicates the most difficult concepts for each candidate. i'm still new to Android and this is my final year project.

i have decided to use android as a mobile platform for the development of the application. in order to rank class participation the android app will use 3 things:

1. Student attendance (i.e whether he's present, absent, late).


2. Whether the student is responding in class by answering question posed in class.


3. And finally whether the answers given by the student are wrong or correct based on the answer given. (i have decided to stick to only programming questions such as java or c++ that Web-Cat which is open source can answer)

i have decided to use GPS or Location data of the Mobile phone to check student attendance. An open discussion chat to measure student responce(that is whether the student is responding to questions or is actively involved in the Chat).

Then lastly An open source Gradder system called Web-Cat that runs on apache tomcat server(i'm having problems getting it run on the server). This Grader will mark the student submissions(of say Java programming questions and grade accordingly). the lecturer would then be able to deduce statistics given by 1-attendance, 2-student responce to questions and 3-whether the answer is wrong or correct. i'll then use chart.js to present these statistics.

i'm having problems installing web-cat on apache tomcat server(it is giving me an error at the end of installing) i'm not sure if this is the right and simple solution. Please help.

This is the interface i have sketched to use for the app: