The school premises used to house the Christchurch headquarters of the Maxim Institute, a conservative Christian thinktank.

[3] In 2018, the school held a mufti day for a gold coin donation called 'dress as refugees' to support World Vision.

The former principal Richard Vanderpyl said that the mufti say was a good way to develop understanding and compassion is to experience a little bit of what it feels like to be poor.

As a state-integrated school, Middleton Grange follows the New Zealand Curriculum (NZC).

There are four of these, named after early British explorers of Antarctica, as Robert Falcon Scott stayed at Middleton Grange's original gentry house before embarking on his ill-fated expedition.