Years ago, I had a student in my form class with special needs. It was very challenging because every day he would come out with a wide variety of pattern to test his teachers. He would run around in circles. I learned to stand still instead of chasing him. He would make strange sounds when the principal was talking during morning assembly. He once tore up a common test paper. He also tried to charge into staff room when the door was ajar.
This student's father came to school every day and every time things got rough, I would have to evacuate him to see the father. There was once he was trying to get near a female teacher and I grabbed him by his bag with one hand while another hand was on the phone to try to text and find out which lesson he was supposed to be.
Then on another occasion, he would splashed his water bottle on some female students and I brought him out of the class. Along the way to the canteen (where his father was), I asked him: "Why did you splash water on the girls?" His answer was, "I want to be number one." What did that mean? Your guess is as good as mine.
This was my first year in a new school but Buddhism kept me sane. He was a 受苦众生 (suffering sentient being). Another perspective is that this boy was teaching me the Dharma. He was giving me an opportunity to practice compassion. How rare is that! He is a 叛行菩萨 - a person who externally appeared to be an obstacle but is actually a bodhisattva to help me deepen my practice.