True that, it is the process to acquire knowledge, this is also the reason why studying is very crucial in one's development, and school is one place where a person can study, from general learning to a specific one or what we call specialization. 

Learning is also a process where every step as we move forward can acquire information and learning.  School is made to have a systematic way of learning but sadly it is not flexible.  Skill can be harness in school and in real life experience, the combination of both will give an outstanding result so I would not dare compare the importance of both stuff (school and skills) because these two are essential in establishing a strong foundation for our successful future.