Announcing the change in the number of compartment chances for Class XII students, chairman of the board Vineet Joshi said that from now on candidates will get three chances instead of five to clear the exam. The number of improvement of performance attempts for Class X students, too, has been reduced to one from five. Candidates shall appear for the improvement of performance attempt to be conducted by the board in July. The new rules, however, will not be applicable to students who have appeared in 2012 and earlier. They will continue to get up to five chances.