Section 1. Schools that participate in the national school lunch and breakfast programs shall serve a complete breakfast, hot or cold, as defined by 7 CFR 220.8, and the noon meal shall be a complete lunch, hot or cold, as defined by 7 CFR 210.10, and serving shall be of such size as to provide at least one-third (1/3) to one-half (1/2) of the daily nutritive requirements of the school age child being served.

Instruction manual for National School Lunch Program requirements.