Page from a 1933 yearbook

Upper left photo shows the cottage with a fountain in front circled by the driveway; Upper right is a view of the original swimming pool surrounded by an ivy-covered colonnade; middle left is a view of early P.E. classes with a team posing middle right; bottom left is the famous giant eucalyptus tree that was located in the center quad; lower right pictures a group of boarding students in the cottage living room. Preschool building Gardner Building East Hall Multi-Purpose Building Main Entrance

1926
In January, Mr. and Mrs. Arthur K. Bourne opened a kindergarten for children of parents interested in Christian Science. In September, the enrollment went from the original four students to fourteen and the addition of a first grade.

1927
School moved to 1261 San Pasqual with twenty-three children through the third grade.

1928
When nursery and fourth grades were added in September 1928, a larger facility was found at 245 West California Street. The School was known as The Claire Louise Progressive Elementary School. Fifth and sixth grades were soon to follow.

1930-31
Seventh and eighth grades and a four year high school were added and the official name of the school was changed to Clairbourn, which means "Clear Goal".

1931
Clairbourn outgrew its building and an estate of 3.5 acres on Huntington Drive in San Gabriel was leased. Clairbourn Hall, A two-story dormitory/classroom/office building, was constructed.

1933
Four students were graduated from high school in 1933 and four in 1934.

1935
The first summer session, recreational style, was operated for over sixty youngsters.

1937
Mr. George E. Platt, father of Trustee Mrs. Edwin Gardner, had advanced money without interest to purchase the property and aided in the construction of Clairbourn Hall. In 1937, he forgave the outstanding school debt under a Deed of Trust. This Trust provided that Clairbourn School would always be operated in harmony with the teachings of Christian Science.

1939
The high school was discontinued and a nursery school was added.

1953
The Nursery-Kindergarten Building was finished.

1958
Adjacent 5-acre site with its Manor House and swimming pool was purchased. Seventh and eighth grades were added with over 100 students enrolled from nursery through eighth. The orange grove in front of the Manor House was cleared and the present playing field was built.

1965
The Carden Method of Instruction was adopted.

1967
Clairbourn opened its doors to students of other faiths, resulting in a social, religious, and ethnic mix in the student body, while the faculty, staff, and administration remained active Christian Scientists.

1967
Two sister campuses were begun in Redwood City and San Rafael. The Redwood City school soon moved to Cupertino and became The Shepherd School.

1969
Five-room hexagonal classroom building for first and second grades, plus an activity room, was erected and named the Gardner Building.

1977
Multipurpose game court finished in May with the generous help of Mrs. Helen Z. Sanger. East Hall (six classrooms for Junior High) was completed.

1980
Trustees established a Master Plan and, with the help of a team of architects, began to map out a new plan for the campus, combining the original 3.5-acre site with the newer 5-acre site. Carden Method was replaced by curriculum chosen by Administration.

1986
New Library, Art Studio, Music Room were completed along with a renovated infrastructure of new sidewalks, new central lighting system, irrigation system and electrical and gas lines.

1988
The Multi Purpose Building was completed in the spring. During a December windstorm, the famous eucalyptus tree in the central quad fell and was replaced by a grove of ginkgo trees.

1989
Trustees authorized a restructuring of Administration, providing for the positions of Assistant Head of School, Director of Business and Finance, and Director of Admissions.

1992 A new facility to house the two fourth grade and two fifth grade classrooms was built. A Director of Development was added to the Administration.

1999
The West Campus Renovation Project was launched with a fundraising drive to replace eleven classrooms from Nursery (3yr olds) through 3rd grade. A challenge grant kicked off the fund for Phase I of the project, replacing the Gardner Building with a six-classroom building for 1st, 2nd, and 3rd grades.

2000
Ground-breaking for Phase I for the new building and play yard took place in March 2000. Randall Hall completed and students occupied the new 6-classroom building in May 2001.

2003
Completion of Phase II in January 2003 included two Kindergarten classroom named Victoria Andrew Hall, and a new entrance and Reception/Transportation pavillion. Also included in this phase was a new home for the student store, Cougar Corner, and an office for the Director of the Early Childhood Education department.