The school hosts the Wirral Able Children Centre,[2] and has been awarded Sportsmark Gold and Investors in People status.

The most recent inspection by government agency Ofsted, occurred in September 2019, and rated the school as "good".

It was established as a free grammar school on the present site by local landowner William Glegg.

[8] The school stands in a residential area of the Wirral peninsula close to the Dee Estuary.

The school is surrounded by suburban housing and the protected heathlands and woods of Grange, Caldy and Thurstaston.

The combined Cadet force has been at Calday since 1916,[15] when a unit of the Officers' Training Corps was first formed.

Volunteering opportunities include supporting the Refilwe Community Project in South Africa which the school has been involved in for over 9 years.