Sonja Rackham (b. 1995/6) attended the Charmbridge Academy from 2007 to 2014.
Described as "a pretty girl with curly red hair and an explosion of freckles across her face and arms," she is also "loud and extroverted." Her name appears on the Registrar's Scroll immediately after Alexandra Quick.
In September 2009, she and Carol Queen moved into the room adjacent to the bathroom of Quick and Anna Chu's room after Angelique Devereaux and Darla Dearborn moved into Room 43. She later participated in the 2009 Halloween Dueling Competition, defeating Ebenezer Smith in the first round of eighth-grade competition before eventually being defeated herself, possibly by Michael Lester.
In September 2010, she and Queen visited Chu and Quick on the first day of school after hearing that Quick had been attacked by a murder of crows on the Invisible Bridge, though Rackham incorrectly claimed that Quick had been "attacked by a flock of seagulls."