HOUSTON -- A Spring middle school teacher was accused of having an inappropriate relationship with a 14-year-old student, KPRC Local 2 reported Monday.

Alison Mosbeck, 33, is charged with sexual abuse of a child.

A probable cause affidavit showed that a friend's mother saw a text message that the teacher sent to the eighth-grader, allegedly asking him if he knew where she could get some marijuana.

Mosbeck taught at Dueitt Middle School, which is where officials said she met the boy.

Court documents said that Mosbeck started a sexual relationship with the boy in November 2006, when Mosbeck took the boy to Pioneer Days, a festival in Humble.

"The defendant was taking the complainant home from Pioneer Days and while in the car, the defendant performed a sex act on the complainant," the court document said.

The affidavit also said, "Mosbeck performed another sex act on the teenager in the cell phone lot on Lee Road near Intercontinental Airport."

She also allegedly drove the boy to two motels where they had sex as recently as March 18, officials said.

Spring Independent School District officials said Mosbeck was placed on administrative leave as soon as the allegations came to light 10 days ago.

Mosbeck was not on campus when she was arrested on Friday.