A class of 25 students participated in a science quiz, and their scores out of 100 are listed below:
85, 78, 92, 88, 76, 90, 84, 69, 95, 80, 87, 82, 91, 78, 79, 90, 93, 88, 75, 85, 86, 91, 94, 77, 89
What is the median score of the class?