yes: Comunidades Autonomas can only defined laws as "permitted" by the central government under a Estatuto de Autonomia (Autonomy statute? not good with legal jargon), which is effectively a law of its own. So at the central level the law says "in this particularly region, matters of education are dealt with regionally", and then that's when regional laws apply. Same from local laws. In essence, all laws emanate from the central government, but the central government decides to delegate some areas; technically, they could always take it back.