In a class of 30 students, the scores of the final exam are as follows:
60, 75, 75, 80, 82, 85, 85, 90, 92, 92, 95, 95, 95, 96, 100, 100, 100, 100, 100, 100, 98, 94, 91, 88, 87, 86, 82, 80, 78, 77.
Using this data, calculate the median score of the class.