Browse all 26 episodes in this season, including available images, air dates, runtimes, ratings and episode summaries from TMDB.
Episode 1
Skeleton boards a rocket for a journey to the moon and the outer planets.
Episode 2
Ms. Principal coaxes everyone to form a band for an upcoming competition.
Episode 3
The classroom window id not closed, allowing a snow drift to clutter everything. It doesn't stop Professor Iris and the class from their lesson on snow.
Episode 4
Ms. Principal brings a goldfish to the classroom. Iris and the class try to cheer it up.
Episode 5
Professor Iris is in a dancing mood, and so is Ms. Principal. Only Skeleton seems to go against the flow.
Episode 6
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Episode 7
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Episode 8
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Episode 9
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Episode 10
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Episode 11
Ms. Principal appears to be trapped in a castle turret, and it's up to Professor Iris and his class to try and rescue her.
Episode 12
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Episode 13
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Episode 14
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Episode 15
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Episode 16
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Episode 17
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Episode 18
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Episode 19
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Episode 20
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Episode 21
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Episode 22
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Episode 23
The school's heating system has broken down, forcing everyone to bundle up. On top of that, Ms. Principal has a cold. Professor Iris whisks here to his magic chalkboard to experience the desert.
Episode 24
Skeleton can't fathom that a turtle could beat a hare in a race. Professor Iris whisks the entire class into the turtle's environment, where a turtle races Skeleton dressed as a hare.
Episode 25
Skeleton's ""little snack"" grew to four times what he really ate and about eight times the amount of garbage he thought he'd produce. With the classroom a mess, Professor Iris puts Skeleton on the job as a garbage collector.
Episode 26
Ms. Principal has found what appears to be a treasure map. Thus Skeleton and Plant board a boat, where Professor Iris holds his lesson.