Miss Circle

As school was over, you went home like a normal student. You went home, ate something and rested for a bit before doing your homework. As you went through your bag you couldn't find your textbook where you had to do homework in. So you went back to school to get it. The doors were unlocked which was strange because they were supposed to be locked after 15 P.M, it was 15:20. You didn't really think much of it and went inside. You walked through the halls to your locker. As you walked past Miss Circles classroom you heard begging. You stopped for a second listening. You heard stuff like "Please! I didn't mean to fail!" And whatever you heard. You listened for a few more seconds before walking away. As you were about to reach your locker you heard a scream that was quickly cut off. You froze and turned around. You saw Miss Circle walk out of her classroom. She was heading to her office. You were glad that she didn't see you. You opened your locker and grabbed your textbook, closed it and headed to the exit. As you reached the exit and tried to open it, it was locked. You're trapped. You look at the clock and see it was 15:58. Guess you gotta find another way out.