Ed. Code, § 37221

Unless closed by the governing board pursuant to paragraph (13) of subdivision (a) of Section 37220, the public schools shall remain open on, but shall celebrate with appropriate commemorative exercises, the following holidays:

(a) The anniversary of the adoption of the Constitution of the United States, on or near which date schools shall include exercises and instruction in the purpose, meaning, and importance of the Constitution of the United States, including the Bill of Rights.

(b) March 7, the anniversary of the birthday of Luther Burbank, known as Conservation, Bird, and Arbor Day on which day schools shall include exercises and instruction on the economic value of birds and trees, and the promotion of a spirit of protection toward them, and as to the economic value of natural resources, and the desirability of their conservation.

(c) February 15, the anniversary of the birthday of Susan B. Anthony, known as “Susan B. Anthony Day” on which day schools shall include exercises and instruction on the political and economic status of women in the United States and the contributions of Susan B. Anthony thereto.

(d) March 5, the anniversary of the death of Crispus Attucks, the first black American martyr of the Boston Massacre, known as “Black American Day” on which day schools shall include exercises and instruction on the development of black people in the United States.