Both are created by the same producer, Jung Jong-Yeon PD and both are shows that require the cast to solve problems. The only difference is the premise, wherein The Great Escape is when the cast is challenged to escape from wherever they end up, and the Girls High School Investigation Class's premise is the girls are placed in a school where they have to discover its secrets.
Girls High School Mystery Class 2 is the second season of GIrls High School Mystery Class. They have the same main people casted in both season. The difference is the plot and the amount of episodes. In the first season, there was 16 episodes but each episode was about 30 minutes but now, they have less episodes but they are longer. Both shows are a mystery and advunture series where the maingirls are going to an only girls school where they are trying to solve different mysteries and problems. All the girls are in a mystery club and no one can be fully trusted but themselves.
