“No, they are biased.”
RebYidd, if this is how the parents of the student feel, then they have their children in the wrong yeshiva. If they feel this is the right yeshiva for their children, and this yeshiva gives exams (the OP has not specified whether these exams are in limudei kodesh or limudei chol – but everyone jumped to the conclusion it is a questoin of limudei chol!!) then either the parents should address their concerns of bittul torah with the rosh yeshiva or menahel who sets the policy, or change the yeshiva they send their child!