This study linked below is a national study, not just for Texas.
AMARILLO - A nationwide survey found that the Clements Unit, a men’s prison in Amarillo, has the highest rate of inmates reporting that they were pressured into sex or sexual contact with prison staffers.
The U.S. Bureau Of Justice Statistics report (PDF) found that 8.1 percent of inmates at the Clements Unit alleged they were sexually victimized by staffers using force or the threat of force.
State prisons spokesman Jason Clark questioned the survey's findings, saying many allegations were not actually sexual assault and "could reflect offender attitudes toward other offensive behavior or legitimate security precautions."
Clements also had the highest rate of inmates saying they were coerced or pressured into sex among male prisoners, at 8.7 percent.
The figures come from a survey of 92,000 inmates over 2011 and 2012.