• Located in the beautiful seaside community of South Oceanside, California, South Oceanside Elementary School was originally built in 1948. Some of the traditions that began then, like the Halloween Carnival, continue on today. With it's complete renovation in 2005, this little school continues to be the heart of our neighborhood. With an amazing staff of dedicated employees, an impressive Parent Teacher Organization, and the world's greatest kids, South "O" is one of the best schools in all of North County!