An interlocked schedule is just where the schedules overlap each other, and they are used because Puerto rico and other Hispanic countries have 2 different choices on what times students can go to school so they needed a way to have both schedules without over crowding the school.
A mi me gusta ir a comer en restaurantes. Me favorito restaurante es pollo loco. Usualmente como arroz y pollo. A mi me encanta el puré de papa, pero no me gustan los frijoles.