Cal. Education Code § 49553

(a) A nutritionally adequate meal, for the purposes of this article, is a breakfast or lunch as defined in Section 49531 that qualifies for reimbursement under the federal child nutrition program regulations. (b) (1) (A) For the purposes of special school nutrition supplements provided to pregnant or lactating pupils under Section 49559, protein and grain meal components for any given day shall, together, offer a total of five ounces of protein, one ounce of which shall be cheese or eight ounces of milk and three servings from the grain group, preferably whole and nutritious grains. This may be accomplished by adding one ounce of protein and one serving from the grain group at breakfast or serving these as a snack, and by adding one or two ounces of protein, one ounce of which shall be cheese or eight ounces of milk, to lunch, or by offering a morning supplement consisting of two or three ounces of protein, one ounce of which must be cheese, or eight ounces of milk, and one or two servings from the grain group. (B) Meal components where only breakfast is served shall be increased to a total including one ounce of protein and two servings from the grain group, preferably whole and nutritious grains. (C) Where both breakfast and lunch are provided, they shall, together, provide a total of five ounces of protein foods, one ounce of which shall be cheese, three servings from the grain group, preferably whole and nutritious grains, one and one-fourth cups from the fruit and vegetable group, and one pint from the milk group. (2) The following options shall be allowed: (A) One cup of fruit in place of one serving of the grain group, once a week. (B) One cup of yogurt, made with pasteurized milk, in place of eight ounces of milk or one ounce of cheese, up to two times per week.