What year did o Henry drop out of school?

O. Henry, whose real name was William Sydney Porter, did not officially "drop out" of school in the traditional sense. He attended school for a short time, but never graduated. Here's a breakdown of his education:

* 1871-1877: He attended public schools in Greensboro, North Carolina.

* 1877-1881: He worked as a clerk in his uncle's drugstore and was an apprentice to a local pharmacist.

* 1882: He moved to Texas to live with his aunt and worked as a ranch hand, a bank teller, and a newspaper reporter.

While he didn't graduate from high school, he was a voracious reader and learned a lot through his various jobs and experiences. It was these experiences that ultimately shaped his writing and made him the famous author he became.