Many people thought that doing well in school is key to success, but there are very few examples where people fail in school but end up successful in life.
In school, the main focus is on memorization, passing exams, and learning theories and laws. Not all students are good at these things. Some of them do better in hands-on work, with a creative mindset, which did not allow them to fit in the school system. If we take an example of successful people, who did not do great in school but are well-known and successful personalities in the world like Ronaldo and Steve Jobs.
Another reason for success in life requires many skills like risk-taking, determination, adaptability, social skills, and flexibility, which are not taught in school. These things are learned from failure, overcoming mistakes, and taking chances again and again, which lead to success in life.