This 'school' is not a Bible school or seminary of some sort. It is a 'school of life' where God's champions are forged! It is a place where fears are confronted, faith is developed, gifts and talents are sharpened and potentials are forced to manifest. It's in this 'school' we are trained for the great future and inheritance God has for us.
King David is one of God's champions in the scriptures. King David was once a candidate of this 'school', it's in this school he qualified himself for the Kingship of Israel. This 'school' is not the four walls of a classroom, it is the back corner of the 'wilderness' for many, this school has the storms of life as part of its different stages and challenges and trials as part of its many courses.
Many people who were potential champions have dropped out of this school because of their inability to endure, and an unwillingness to persist.
When you are being trained in this school you are hardly seen and relatively unknown because the time of your showing has not yet come. Your graduation from this school after passing your 'courses' is what 'shows' you or brings you to your manifestation.
King David passed, he made it to the Kingship and became a hero of faith! What about you? Have you even enrolled?