It was opened in the Reflective Garden at Charters School, in Charters Road, and was designed and made by pupils in Years 7, 10 and 12.
The project was co-managed and designed by Year 12 student Samuel Johnson and Rebecca Warren, art teacher at the school, along with the other youngsters.
The inspiration for the design came from the concept of growth and life.
Samuel said: "The garden includes benches and is surrounded by wooden panels and greenery. I am so pleased that I have been able to add something different to this wonderful space."
Miss Warren added: "It's been wonderful watching the students design and create art work for this mural in such an iconic area within the school grounds and I look forward to it being added to in years to come."