Teenage Mutant Ninja Turtles S06E15 - Graduation Day - Class of 2105.

Splinter announces that the Turtles will graduate to the next ninja rank, Chunin, for using the 3 pillars of life: being invisible, indestructible and showing insight. Except for Michelangelo, who skipped the exam to play video games. But Splinter gives him a last chance to graduate with his brothers.