A 17-year-old youth was convicted by a D.C. Superior Court jury yesterday in a shooting rampage in which 11 people were wounded in April as they left a go-go dance at a rented Masonic hall.

Derck C. Gillis, who was tried as an adult, was convicted of 11 counts of assault with a dangerous weapon; each count is punishable by up to 10 years in prison.

The shootings April 11 appeared to stem from an argument that started earlier in the crowded rented hall at 10th and U streets NW. Gillis, of 1008 Fourth St. NE, was acquitted of a more serious charge of assault with intent to murder while armed.

Three persons, including one who was critically wounded, were hospitalized with injuries after the shootings. Police said a number of the wounded appeared to be bystanders who had spilled out of the hall after the dance.

The shootings renewed concerns over the popular go-gos, which attract hundreds of youths, and prompted legislation, still pending before the D.C. Council, that would restrict how late minors can stay at them.

No date for sentencing was set. Gillis also faces trial on charges of wounding four other people in shootings outside the same hall Jan. 4.