In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Sentence1: Two students were passing notes in class. Sentence2: The young teacher noticed it happening. Sentence3: The students still seemed to be paying attention. Sentence4: The young teacher decided to simply ignore it. Sentence5: The young teacher was generally well-liked by his students.
Students, Young teacher