Country star Clint Black harbours huge regrets about dropping out of high school before graduating.

The 43-year-old singer left school before turning 18, but now appreciates how important education is.

He says, "I regretted (dropping out of school) within a year (of leaving), and I knew what I had thrown away. I knew how valuable that time was.

"When I talk to kids about it now, I tell them, 'This is the only time in your life where you'll have one job that serves just you, and if you can take advantage of that and get everything out of it, then it'll serve you for the rest of your life."