The junior school is for pupils aged four to twelve and includes the Early Years Foundation Stage (EYFS).

In the same year the school also leased the semi-detached West View, immediately below Sutherland House and extended the frontage of both in 1887.

During the War, Montgomery oversaw the temporary relocation of the school and its pupils to the West Country, his last major effort before resigning from the chairmanship in 1944.

[4] The Junior School (also known as Fairseat)[citation needed] was the home of Sir Sydney Waterlow, 1st Baronet, who donated the park next door to the public after he died.

An upper floor was added to Brunner House in 2003, and constitutes staff offices and classrooms which double as the form rooms of year groups 7 to 9.

Channing Junior School's (Fairseat) Grounds are part of Sir Sydney Waterlow's park.

The School also owns a large expanse of grass on Stanhope Road where summer sports are played and the Channing Fireworks are held.