MathQuiz PlugIn for elementary school students

Hello WordPress-Community,

im searching for a mathquiz plugin for elementary school kids 1st to 4th grade. Add, subtract, multiply and divide.

Here are the importand points that I had in mind:
– there are 12 classes – 1A, 1B… 4C, and each class will collect points for itself. The results shall be stored for every class and displayed on the man quiz page
– for every class level (1, 2, 3 and 4) there are two question levels – easy and hard
– math questions are random created within a specified range. (eg. only + and – up to 20 for class level 1)

I would be very thankfull for every help I can get.

Kind Regards,
Piotr