Even with clearly above average students, it is rare that they reach, e.g., med school before their peers no matter what and the difference is a year or two, wh

Even with clearly above average students, it is rare that they reach, e.g., med school before their peers no matter what and the difference is a year or two, which is insignificant. There's also more to maturation than education and some people never become fully mature adults, for instance.