Final answer:
This example might be an example of in group/out group theory of prejudice and discrimination.
Step-by-step explanation:
The theory of prejudice and discrimination that this example might be an example of is in group/out group theory. In this case, Jewell and Amie were initially in the same social group as friends in the evening class, but once Jewell discovered that Amie was actually a teacher, Amie was perceived as part of a different group (the teacher group) and Jewell ended their friendship as a result.