Hayward Unified School District history

In about 1953, appraisals of the homes on the site of the school were done and the property was taken by HUHSD using eminent domain. It started in 1948 when Hayward Union High trustees authorized school officials to begin negotiating for the approximately 30 acre site where Castro Valley High stands today.

Ground-breaking ceremonies for the first San Lorenzo High School were held on January 24, 1950 by the Hayward Union High School District Trustees.

Freshmen and sophomores moved into the $2,500,000 campus, and the first graduating class was in 1953.

In September 1954 more than twenty homes were sold at auction and hauled away by new owners.

A sign at the site of the future Castro Valley High School as it appeared in 1956.

High School school opened in September, 1957.

Many teachers who had worked there in the 60’s, 70’s, and early 80’s under its previous name, such as Glen Arney and Dave Cobble, returned after spending those 3 years at an elementary school. It was used as a parent co-op for small children by the San Lorenzo School District until demolished in the early 1960's.

San Lorenzo High was part of Hayward Union School District from 1950 – 1963. It joined the San Lorenzo School District in 1963 while Paul Ehret was the Superintendent.

The San Lorenzo Unified School District built Marina High School in 1964.

After 25 years, Calaroga school was closed in 1983 because the District made a decision to close all of the junior high schools.