Students at an East Texas high school were shocked to find out that one of their sophomore classmates was actually a 31-year-old woman posing as a teenager, according to police.

On Tuesday, police in Longview arrested Charity Anne Johnson, 31, for failure to identify/giving false, fictitious information.

According to KLTV in Tyler, Texas, Johnson had been enrolled at New Life Christian School since October under the name Charity Stevens. She had given the school identification that indicated she was 15.

What's more, KLTV reports Johnson tricked a family into taking her into their home and becoming her guardian.

"I sympathized with her, and invited her into my home," Tamica Lincoln told the TV station. "I took her in as a child, did her hair, got her clothes and shoes..."

Lincoln said Johnson told her she had come from an abusive home and that both of her parents had passed away.

"Teachers were crying and students were crying, and her best friend just couldn't believe it," Lincoln told KLTV.

Johnson was in the Gregg County Jail Thursday on $500 bond.