A D.C. man who told a federal judge that the 4 1/2 months he has been in jail on drug charges have been a "nightmare" will have to tell high school and college students about his experience for the next 4 1/2 years as part of his sentence.

Alvin V. Bailey, 36, of 1240 Neal St. NE must address student groups at every public senior high school, college and law school in the District at least twice a year as he completes 1,200 hours of community service.

U.S. District Judge Joyce Hens Green said the talks must cover the "negative aspects of drugs . . . and incarceration." In addition, she ordered Thursday that Bailey, who pleaded guilty to a drug conspiracy charge, serve five years in prison -- with all but six months suspended -- and pay a fine of $10,000. He will be eligible for release in less than two months.

Janis Cromer, spokeswoman for D.C. schools, said yesterday that the system regularly uses such guest speakers in drug information programs.

"Actually, they are pretty effective," Cromer said of such speakers. "Teen-agers in particular have a real aversion to being lectured to, but when they hear someone who's 'been there,' they seem to be more responsive."

Bailey was arrested Oct. 29 after he and Cornell Jones, identified by prosecutors as one of the major drug suppliers for Hanover Place NW, purchased what they believed was a kilo of cocaine from undercover police officers at the Hyatt Regency Hotel. Bailey, described in court as the middleman in the transaction, bought the purported cocaine as part of what was to be a 10-kilogram purchase.

"How could you get yourself in such a position?" asked Green, pointing out that Bailey, an Ohio native, was reared in a close-knit family and has a master's degree.

She said she was "placing a great deal on responsibility on myself and on you, Mr. Bailey," in sentencing him to "give back to the community."

"I wish you good luck, I expect much from you."