UPDATED: 03/25/17, 6:13PM

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TROPHY CLUB (CBSDFW.COM) – A Northwest ISD middle school teacher has been arrested for allegedly having an improper relationship with a student.

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Back in December, Trophy Club Police say they received information from Northwest ISD that 27-year-old Katherine Harper had an improper relationship with a former 15-year-old student.

Police say they initiated an investigation in December when they were notified.

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Police arrested Harper, a 7th grade English teacher and coach at Tidwell Middle School in Roanoke on March 21.

She is charged with an Improper Relationship Between Educator & Student, a second-degree felony.

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Harper was booked into the Denton County Jail and was released after posting a $15,000 bond.