Complete story — includes the ending
After being accepted into "Tomorrow's Teachers Today", a student-teaching program, Josh becomes Megan's new chemistry teacher temporarily. However, Josh takes his new job seriously and soon abuses his teaching skills, as he challenges the students with college-level chemistry (something that they are not old enough to comprehend) and even fails the students on pop quizzes based on homework that they were mentally incapable of doing. Because of this, Megan quickly becomes alienated by her classmates due to being Josh's sister, and is even uninvited to her friend Katie's birthday party, which includes a piñata made in Josh's likeness. Meanwhile, Drake befriends a boy in Megan's class named Neil Kramer, who has a natural talent for playing drums. After discovering this, Drake asks Neil to play for his band on Friday at The Premiere's anniversary party after his original drummer quit. However, Neil's mom forbids him since he failed Josh's pop quiz, leading Drake to also be annoyed at Josh. Drake and Megan then scheme to have Josh fired from the student-teaching program by sneaking into the school late at night, replacing Josh's safe chemical with one that will instantly explode when combined with anything, while also replacing Josh's video about compunds with a video of clowns and unscrewing the sink's faucet so that it will spray water when turned. In the end, Josh is fired and Neil plays with Drake in the concert. However, Megan and her classmates then gift a trophy to Josh, calling him their favorite teacher, seeing as him screwing up his teaching job caused their class's regular teacher, Ms. Hunter (whom they all hated), to quit. The children then admit that Josh is cool, not as a teacher, but as a friend, which Josh delightfully accepts.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of Drake & Josh episodes. HTML formatting and reference markers removed. · Content license