I'm a DD--double dropout, both from high school and college. Though I probably do have enough credits for an associate (2-year) degree from the U. of Montana in biology.
What Jim in Idaho said about continuing education if correct. All a formal education does is provide the basics. Both my parents had Ph.D's, but continued to learn throughout their lives. I wasn't cut our for formal education--high school bored the snot out of me, and after my sophomore years I decided to go out and see the world for a while.
Started college at 24 and took whatever seemed interesting. Dropped out of college when I had the choice of writing a history term paper or writing my first book for actual money. Money won--but haven't stopped learning.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
