Tunkl v. Regents of the University of California
Tunkl v. Regents of the University of California [1] was a landmark case in California that established a persuasive six-factor test that helps guide courts to decide when a contract relates to the "public interest." Specifically, California courts had a history of holding exculpatory liability waivers within contracts to be valid only if they did not involve the "public interest." This case history arose in relation to Cal.
Source: Wikipedia — Tunkl v. Regents of the University of California (CC BY-SA 4.0)