Sabrina Grant, mother of a fourth grade student with autism at Woodrow Wilson Elementary School, is upset after her son's teacher's aide not only pulled out his tooth at school, but managed to pull out one that wasn't loose, CBS Boston reports.

Chris, 10, went to school with a loose tooth, something his teacher said was causing a distraction as the student had his hands in his mouth during class.

“We pulled [the tooth] out today and had him checked by the nurse immediately after," the teacher said in an email to the student's mother. "He is fine. You will be receiving his tooth this afternoon when he arrives home. If you are bothered by us pulling his tooth, please let me know. I apologize for this in advance.”

The situation worsened when Chris came home and Grant realized they removed a molar instead of the loose tooth.

“When I realized he got off the bus it was the wrong tooth they had pulled out, it was even worse,” Grant told WCVB-TV. "How could somebody not even medically trained pull a tooth that wasn't even loose out of his mouth?”

Chris has been moved to a different program in the school and Grant is considering pressing charges against the school.

According to the Associated Press, the district superintendent has launched an investigation into the incident.

Watch the CBS Boston report above for more on this story.