For the third year in a row Mundelein High School is in the top 100 high schools according to Niche.The 2018 Best Public High Schools ranking is based on rigorous analysis of academic and student life data from the U.S. Department of Education along with test scores, college data, and ratings collected from millions of Niche users. This year MHS ranked 76 in Illinois. Last year we are ranked 87. During the previous three years MHS has moved up 16 spots and improved a full letter grade from a “B” to an “A”.