Design Question For Quiz App

Hello, I'm trying to create a simple application that lets a user take
a quiz with 20 or 30 questions. I want to keep a record of the
questions they get right and wrong so at the end I can output
something like "you got 90 % of level 1 questions correct, 10% of
level 2 questions correct etc.." I was thinking about using two
serialized columns like ques_right, and ques_wrong to mimic arrays
then iterate through these at the end of the quiz. Does this sound
like the best way to go, or is there a simpler way?? Thanks for any