In 2009 I developed a system like this as part of my course at the equivalent of a community college. The premise of the class was to develop a real world application employing the skills we had learned so far (project management, programming, etc). The whole class (10 people) participated in building this software.

We spent 6 months on it and as far as I heard was still in use as late as 2015.

You don't have to create a whole system; just a database that prepares variants of questions, and a method to put it into the existing exam software.