India, June 18 -- The former teacher of Downers Grove South High School, who is accused of sexually abusing a minor student, has been charged with 55 criminal counts.

Christina Formella, 30, is accused of engaging in an extended, manipulative relationship with a student that allegedly began when the boy was just 14 years old. On Tuesday, she was arraigned in DuPage County Circuit Court on 52 additional charges, following the initial three counts she faced after her March arrest.

The new charges include multiple counts of criminal sexual assault, aggravated criminal sexual abuse, indecent solicitation of a child, and grooming. Prosecutors say Formella used her authority and access as a teacher to create a damaging and coercive relationsh...