State law recommends specific time to eat after sitting down or requires 'adequate' time to eat.
South Carolina Code of Laws 59-10-350. Length of lunch period; factors.
Each elementary school shall provide students a minimum of twenty minutes to eat lunch once they have received their food. In determining the total length of the lunch period, time to and from the cafeteria, time to go through the line, and time to bus trays at the end of lunch must be considered.