"GED" - Season 2

Earl is let down when his credit card application gets denied. He feels like a child and wants to take more responsibility for his life. Catalina suggests that if Earl feels like he screwed himself out of being an adult, he should put himself on the list.
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Earl decides to start becoming an adult by getting his GED from the local high school. Earl has trouble with the entire test. He decides to go back to his old high school teachers in hopes that they'll help them.
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Earl is saddened to find all of his old teachers had lost their enthusiasm for their jobs. It turns out that after Earl left school, the students became nastier and nastier to their teachers and the teachers were losing all hope. Earl offers to get through to the snot-nosed kids, knowing it's going to be a challenge.
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Earl's students refuse to pay attention to him in class, so he takes them to his motel to show them what happens to guys who goof off in school. He wants to get across to the students that school is important. They all come to the conclusion that Earl is a loser.
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Earl is touched when one of his students, Summer, comes to him for advice on how to avoid being a loser. In exchange, Summer helps Earl with his studying for the GED exam. It turns out that Summer set a trap for Earl. While he was getting tutored, the rest of the students flipped his car.
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Earl is so fed up with the students that he gathers the rest of the teachers to get revenge. The teachers start pulling pranks but their pranks backfire when one of the teachers accidentally blows up a student's car. Turns out that's what scared the students straight. The teachers are so relieved they invite Randy and Earl to attend classes, too. After attending all the necessary classes, Earl finally passes his GED exam.