[2] The Greek aphorism "GNOTHI SE", meaning "know thyself", is Delta's motto and was chosen by Mr. Walter Clarke, the school's first Latin teacher.

In the years before construction, the Board of Education referred to the new collegiate as the "East-end Collegiate" but later adopted the name "Delta High School" as the "Delta" was well known to Hamiltonians as the land area created by the crossing of the two major arteries, King and Main Streets.

In November of the same year, Delta was declared formally open by G. Howard Ferguson, Premier of Ontario and Minister of Education.

Efforts to create an alternative solution to closing were made given the age of the building, the history, and the vital role that the school plays in the lives of students and the neighbourhood.

The program gives students the opportunity to become registered apprentices and work towards becoming certified journey-persons in a skilled trade while completing their secondary school diplomas.