The term FR. MISSES is a five-letter acronym that stands for 'Femmes Religieuses Missionnaires de l'Enseignement Secondaire, ' which translates to 'Religious Women Missionaries of Secondary Education' in English. This term refers to a group of Catholic nuns who are dedicated to providing secondary education to children and young adults. The nuns are committed to helping students develop their knowledge and skills, as well as their spiritual and moral values.