Zend certified PHP/Magento developer

Is there a way to bring back names that are not on one list but on the other in excel

I have 64 competitions with various schools, I need to know who can judge them. We have the schools and a list of adjudicator schools. I hoping to match back those who have no participants in each competition and create a list of available adjudicators. I need the full name of the school to come back and not just missing etc