Three periods of intensified activity have occurred during the past 3000 years.

Another period of rapid residential development occurred in the 1880s.

The first two periods of major growth had occurred during the mid-1960s and early 70s, respectively.

A bad period of depression occurred in the late 90's.

A further brief period of 3D movie production occurred in the early 1980s.

The period of greatest prosperity for the school occurred between the years 1840 to 1850.

Their major period of activity occurred during the late 1970s through the early 90's.

The second distinct period in the history of the school occurred between 1980-1996.

The most recent active period occurred from 2003 to 2004.

A second period of building growth occurred from the 1960s through the 1980s.