DALLAS

 teenager has been jailed for more than a year for shoving a teacher’s aide at her high school, a case that has sparked anger and heightened racial tensions in rural East Texas.

Shaquandra Cotton, who is Black, claims the teacher’s aide pushed her first and would not let her enter school before the morning bell in 2005. A jury convicted the 15-year-old girl in March 2006 on a felony count of shoving a public servant, who was not seriously injured.

The girl is in the Ron Jackson Correctional Complex in Brownwood, about 300 miles from her home in Paris. The facility is part of an embattled juvenile system that is the subject of state and federal investigations into allegations that staff members physically and sexually abused inmates.

Under the sentence handed down by Lamar County Judge Chuck Superville, she will remain at the facility until she meets state rehabilitation standards or reaches her 21st birthday.

But her family and civil rights activists say they want her home now. They are condemning the sentence as unusually harsh and say it shows a justice system that punishes young offenders differently, depending on their race.

Creola Cotton, Shaquandra’s mother, and activists argue that while Superville sent Shaquandra to the state’s juvenile prison system, he gave a white 14-year-old arsonist probation.

As many as 400 people marched and rallied in Paris on Tuesday, the second such protest in as many weeks by civil rights groups.

Meanwhile, the Paris school district fiercely denied claims of racism and chided the girl’s mother for “playing a game” to start controversy.

Creola Cotton says her daughter received an unjust punishment for pushing the Paris High School employee. Her complaints have prompted federal civil rights investigations into the school district.

“My daughter has been (at Brownwood) a year now,” Creola Cotton said. “It’s time for her to come home.”