BATON ROUGE - A former Baton Rouge resident and Louisiana native was among the 10 people killed in a mass shooting at a Texas high school Friday.

Cynthia Tisdale graduated from Broadmoor High School in Baton Rouge, according to Tisdale's Facebook page. She is a native of Thibodaux, La.

According to The Washington Post, Tisdale was a substitute teacher at Santa Fe High School.

"She started substitute teaching because she loved to help children," Tisdale's son, Recie Tisdale, told The Washington Post. "She didn't have to do it. She did it because she loved it."

Tisdale was married for 46 years, according to her Facebook page.

17-year-old student Dimitrios Pagourtzis has been arrested in the attack on capital murder charges.