Section 26.01 - Purpose and Construction; Definition(1)603 CMR 26.00 is promulgated to insure that the public schools of the Commonwealth do not discriminate against students on the basis of race, color, sex, gender identity, religion, national origin or sexual orientation and that all students have equal rights of access and equal enjoyment of the opportunities, advantages, privileges and courses of study at such schools. 603 CMR 26.00 shall be liberally construed for these purposes.(2) The obligation to comply with 603 CMR 26.00 is not obviated or alleviated by any local law or rule or regulation of any organization, club, athletic or other league or association that would limit the eligibility or participation of any student on the basis of race, color, sex, gender identity, religion, national origin or sexual orientation.(3) For purposes of 603 CMR 26.01, gender identity shall mean a person's gender-related identity, appearance or behavior, whether or not that gender-related identity, appearance or behavior is different from that traditionally associated with the person's physiology or assigned sex at birth. Gender-related identity may be shown by providing evidence including, but not limited to, medical history, care or treatment of the gender-related identity, consistent and uniform assertion of the gender-related identity, or any other evidence that the gender-related identity is sincerely held as part of a person's core identity; provided, however, that gender-related identity shall not be asserted for any improper purpose.