A former Northside Independent School District elementary teacher was indicted on multiple child sex abuse charges after she allegedly sexually assaulted a student multiple times about a decade ago.

Cecilia Mueller, 47, was first arrested in connection with the alleged incident on April 27, 2026.

According to police, the alleged assault happened with a student several times while she was a teacher at Lewis Elementary School for nearly 12 years, until June 2019. Mueller is no longer affiliated with the district, and records show her teacher educator certificate is also indefinitely suspended.