Quizzes

Dear Sir/Members

I have creates different roles like class 1,class 2,class 3 etc
I have created different quizzes like class 1 test ,class 2 test ,class 3 test etc

Now i want to assign class 1 test to role class 1 and class 2 test to role class 2

The problem i m facing is user of role class 2 can see quiz "class 1 test"
Is there any way by which we can make a provision in which class 2 role can only see the quiz class 2 test

Regards