They had demanded the return of land taken five years ago for a government development project.
He is finally sentenced after being held for almost a year.
Students will now be sent to a Chinese state-run school 20 miles away from their homes.
He was returned to his home this week after being detained for nearly two-and-a-half years.
Police take them into custody after they cannot pay additional costs of government housing.
Many are unable to pay the cost of additional space they had requested.
But close ties between mining firms and higher authorities block effective protest.
The move comes despite a lift on passport bans for lay Tibetans.
He was found with a photo of exiled spiritual leader the Dalai Lama and other restricted images.
They had tried to take their complaints to higher authorities after local officials' failure to act.
The manipulation of test scores will hurt their chances for a government job, they say.
They had refused to elect a government-supported candidate, voting instead for someone who had 'served the people.'
But the social network says its removal of dissident postings was consistent with company policy.
They had protested government efforts to take their property for construction of a police barracks.