Student 3 is a minor character and one of the students of Gregory McLeod's School flash animation as part of the Halloween 2005 special. He is very short and thin with black hair. He wears glasses, a blank T-shirt and yellow pants. He was the very first student to be killed by Mr. Hackensaw.
Afther the creepy teacher, Mr. Hackensaw threatens Student 2 with a knife, when trying to "teach" the math concept of "IR>U", this Student warns the teacher that knives are not allowed in the school, but the teacher launches it on Student 3's head, killing him.
His legs were programmed to do an oscillatory movement (to move back and forth) while he was sitting. After Mr. Hackensaw kills him with the knife, while he is lying death on the floor, his legs still keep moving back and forth for the remainder of the cartoon, when they are not supposed to move as he is already dead.