Phoebe and Max return to their elementary school to complete a hero assessment exam and discover that the instructor is a former classmate that Max tormented.  Meanwhile, Nora is tired of how chores are assigned so she insists on an election to become head of household. (imdb.com)

This is a rather tired plot – character A learns that there has been some grading error in the past and must return to school – usually elementary school – and complete some course or test to “graduate.”  And, of course, the instructor holds some grudge against the returning student.  We have the same thing here.  Super President Kickbutt informs Phoebe – and Max – that they did not complete their Power Assessment Test in 5th grade and must go back and complete it.  If they don’t, Phoebe will no longer be a super hero and Max will be sent to junior jail.

When they arrive back in school, Max recounts how he used to make fun of a classmate named Metalbutt.  And who is the assistant in the classroom – Metalbutt.  To pass the test, they must successfully complete two of three tasks involving a robot.  The first is to create a tool using limited parts to stop the robot in 60 seconds.  Max builds a female robot with the clock radio that emits a frequency that the Z280 cannot tolerate.  They fail the second test.  But in the third test, they need to avoiding shooting lasers to save the dummy on the floor.  Metalbutt cranks up the frequency and the Thundertwins are in trouble.

Somehow, Metalbutt become magnetically attracted to the school logo – and is in danger as well.  Max and Phoebe have a choice – save Metalbutt or save the dummy.  They decide to save Metalbutt and Max apologies for making so many negative comments about him.  Even though the dummy is toast, Max and Phoebe pass.

Meanwhile, Nora is miffed that she keeps getting assigned the same chore so she challenges Hank to an election as President of the Household.  There’s a wacky debate and Hank brings out a chocolate fountain and a clown to get Chloe and Billy’s vote.  Nora gets all sulky when she votes and Hank apologizes for not listening to her.  This is just enough for her to cast her vote for Hank.