The crossword solution for the term 'Reason for a class struggle?' is EXAM. A class struggle is a conflict between different classes in society, usually between the working class and the ruling class. This conflict can be caused by a variety of factors, such as unequal distribution of resources, unfair labor practices, or an EXAM that creates a divide between those who pass and those who fail. Exams can create a sense of competition between students, which can lead to a class struggle.