As most professional developers know, coding is only a fraction of the total software process. There is team planning, debugging, sales, support, teaching, management, etc. A startup might spend half its hours on coding. At a mature software conglomerate this may fall to one-fifth of the hours. Learning all this can take a year of more.

Its not what you see in most schools where it mostly coding. However thats improving as students put stuff on github in a turnkey state.