Judge Md Hafizur Rahman of Barguna’s children court passed the order at 2:30pm on Tuesday.
Among the 11, six were sentenced to ten years in jail, four to five years and one to three years.
Earlier in the morning, all the 14 accused were produced before the court for verdict in the sensational murder.
A total of 74 witnesses testified against the 14 accused, aged between 14 and 17.
Rifat was hacked in broad daylight in front of Barguna Government College on June 26 last year. He died at Barishal Sher-e-Bangla Medical College Hospital on the same day.
On September 30, the District and Sessions Judge’s Court delivered the verdict on the 10 adult accused.
The court handed down death sentences to six, including Rifat’s wife Ayesha Siddika Minni, and acquitted the four others.