Postwar population growth led to the expansion of two buildings in the late 1950s. The first was the Presbyterian Church, which received a new Sunday School wing in 1955. Two years later the high school across the street, serving more students than it was originally designed for since 1937, followed. Its new wing, completed in 1957, was first used for the junior high school students. It was built of brick and intended to be architecturally sympathetic.
