FORT WORTH, Texas (AP) -- A former Texas high school teacher has been convicted after having sex with five 18-year-old students at her home.

A jury found Brittni Nicole Colleps guilty after less than an hour today.

She was charged with five counts of having an inappropriate relationship between a student and teacher. The second-degree felony is punishable by between two and 20 years in prison per count.

Authorities say the 28-year-old former Kennedale High School English teacher had sex with the students at her Arlington home over two months. Jurors heard graphic testimony from the involved students during the trial and were shown cellphone video of one encounter involving multiple students.

Prosecutors rested their case Thursday; the defense didn't call any witnesses.

Kennedale is a suburb of Arlington, southeast of Fort Worth.