The Pigeon HAS to Go to School. Word Search Puzzle Solver. The Pigeon HAS to Go to School word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. Why does the Pigeon have to go to school? He already knows everything! And what if he doesn't like it? What if the teacher doesn't like him? What if he learns TOO MUCH!?! This includes identifying and searching for words that are related to : Animation, Mo Willems .