Thanks for the feedback on the previous shot. I've reworked on the side navigation, making it more simpler by dropping the background.
I'm quite happy how the project is turning out. There're two more screens attached.
It helps students know about the scores and time spent/remaining.
I'm using vivid colors for the graph on purpose, I do, however, have a version where graph is less attention grabbing.
A place where students can see the tests they've taken in the past.
Looking forward to hearing your feedback.