An inmate may not be housed in a correctional facility that primarily houses persons of a different biological sex than that of the inmate if the inmate has previously been convicted of a sex offense as defined in RCW 9.94A.030 against a victim whose biological sex is the same as those persons who are primarily housed in that correctional facility.

A health care provider licensed under this title may not knowingly engage in or cause any of the following practices to be performed on a minor if the practice is performed for the purpose of attempting to alter the appearance of, or affirm the minor's perception of, the minor's gender or sex, if that appearance or perception is inconsistent with the minor's sex: (a) Prescribing or administering [...] drugs used to block the androgen receptor, or any drug to suppress or delay normal puberty; (b) Prescribing or administering testosterone, estrogen, or progesterone to a minor in an amount greater than would normally be produced endogenously in a healthy individual of that individual's age and sex;

Interschool athletic activities [...] must be organized using the following groupings for the purposes of participation and competition: (a) Students who have the same kind of sex chromosome (xx) who identify as a woman or girl; (b) Students who have the same kind of sex chromosome (xx) who identify as a man or boy; (c) Students who have two different kinds of sex chromosomes (xy) who identify as a man or boy; (d) Students who have two different kinds of sex chromosomes (xy) who identify as a woman or girl

The competitiveness rules adopted under this section [...] may include rules that permit the exclusion of individual competitors from girls' athletics events and contests where the competitor would have an unfair advantage based on endocrine characteristics.

(a) An employee or contractor may not use a name to address a student other than the name listed on a student's birth certificate, or derivatives thereof, without the written permission of a student's parents or guardians.