LEBANON, Ohio (AP) – A teenager convicted of selling up to $20,000 worth of high-grade marijuana a month to high school students in southwestern Ohio has been sentenced Monday to serve six months to three years in a juvenile prison.

Tyler Pagenstecher of Mason pleaded guilty to drug-trafficking charges in July.

How long the 18-year-old actually serves will be determined by Ohio’s Department of Youth Services, depending on his behavior. The judge who sentenced him today called him “a pretty fine young person that went down a bad trail.”

Authorities say Pagenstecher was one of the most prolific drug dealers in the Cincinnati area, a “little czar” in charge of six teenage lieutenants who helped him sell the marijuana to well-to-do students at two high schools.