92011 has the Carlsbad School District with high scoring Pacific Rim Elementary and Aviara Oaks Elementary. Near to Pacific Rim, the pre-schools of Brilliant Kids(Montessori), Discovery Isle, and KinderCare would all be good choices. This zip is west of El Camino Real to the ocean and south of Palomar Aiprot Rd.
92009 in southeast Carlsbad(basically south of La Costa Ave) is in the coveted Encinitas School District where any of the elementary schools would be a good choice. La Costa Valley Preschool, Early Explorations, Encinitas Country Day School, and The Gifted Preschool are some examples of good pre-school choices.