We're supposed to believe that in 55 years, a private school in California would ever tolerate someone bothering their token minority. In a believable storyline, not only would David be socially untouchable, the kid's mom would not worry about paying a dime in tuition.
Remember that corporations are the enforcers of diversity in the REAL cyberpunk California. The son of a bigshot exec, even a Japanese one, would be trained to never express a thought against Hispanics. Nor would a kid be picked on for being raised by a single mom.
"The Arasaka Corporation is committed to supporting, cultivating, and maintaining a culture of diversity, equity, and inclusion. All employees and their families must exhibit conduct that reflects inclusion on or off the worksites. Offensive conduct in the workplace will result in immediate termination."
The Cyberpunk franchise, as well as the genre in general, suffers from being rooted in 1980's anti-Reagan paranoia, and the themes were never updated. (This is also why you have paramilitarized EMTs called Trauma Team, who let the injured-uninsured die on the street. In the real dystopia, corporations support Medi-Cal because it socializes benefits they don't want to pay for.)