By April 1762, accommodation was first provided for the school, in the form of a two-storey building which occupied the site of the current Perth City Hall.

In 1915, the Academy was amalgamated with the rival Sharp's institution, also located in Perth, leading to a decrease in the fees paid by students.

Large extensions were added to the school in 1990, including a separate building for a gymnasium and games hall, as well as workshops and an art studio.

The science laboratories were also renovated at this time, with computer rooms being added and suites created for the music and business departments.

[6] Perth Academy is situated in the middle of extensive grounds, stretching to some 11.93 ha, a large part of which comprises sports pitches.

The school canteen is in a separate, smaller building which outside lunch times also serves as a gym room and holds a suite of exercise equipment, such as treadmills.

There is also a separate block housing the physical education department which includes two indoor areas for gym and sports activities.

[11] The school regularly fields teams for, and hosts, events including hockey and rugby,[12] as well as competing in athletics at county sport level.

In order to obtain the silver flag award, Perth Academy had to use their initiative to involve some students in activities relating to the following categories: litter, energy, health and well-being, transport, waste minimisation, biodiversity, school grounds, water, sustaining our world and food and the environment.