(a) No local agency or educational institution or counselor shall discriminate against any person on the basis of sex, sexual orientation, gender, ethnic group identification, race, ancestry, national origin, religion, color, or mental or physical disability in the counseling or guidance of pupils.

(b) Nothing in this section shall be construed as prohibiting a local agency from encouraging members of one sex to enter courses, programs, activities or occupations which are traditionally entered by the other sex.

(c) Counseling includes, but is not limited to, academic, vocational, career, social or psychological counseling which is conducted or sponsored by, through, or at an educational institution whether in an informal or formal program, workshop or other activity, or whether conducted or sponsored on a routine or sporadic basis.

(d) Counseling includes, but is not limited to, any person, group, or sub-group, regardless of title or job description, who engages in counseling of any pupil.