The addition was finished and opened to the public in 1976.

Costing $22.5 million, the new addition was opened in December 2005.

On September 24, 1989 the new addition was opened to the public with community rooms, a gallery and a reading garden.

The addition, which connects to the old building, was opened for the beginning of the 2003-2004 school year.

These additions were opened at the beginning of the 2010-2011 school year.

The student population continued to increase and a new addition to the building was opened in May 1987.

A $4.5 million addition, funded through a 2004 bond issue, was opened in August 2007.

The first addition was opened on 6 May 1906.

An addition was added in 1929, and opened in 1931.

A new addition to the site was opened in 1913.