Cal. Bus. & Prof. Code § 2911

Nothing in this chapter shall be construed as restricting the activities and services of a graduate student or psychological intern in psychology pursuing a course of study leading to a graduate degree in psychology at an accredited or approved college or university and working in a training program, or a postdoctoral trainee working in a postdoctoral placement overseen by the American Psychological Association (APA), the Association of Psychology Postdoctoral and Internship Centers (APPIC), or the California Psychology Internship Council (CAPIC), provided that these activities and services constitute a part of his or her supervised course of study and that those persons are designated by the title “psychological intern,” “psychological trainee,” “postdoctoral intern,” or another title clearly indicating the training status appropriate to his or her level of training. The aforementioned terms shall be reserved for persons enrolled in the doctoral program leading to one of the degrees listed in subdivision (b) of Section 2914 at an accredited or approved college or university or in a formal postdoctoral internship overseen by APA, APPIC, or CAPIC.