The stencil, done in the style of street artist Banksy, shows a Keswick School student walking towards the maths and physics corridor with a speech bubble over his head.
The artwork had appeared over the weekend of April 23.
It features an equation that represents Albert Einstein’s general theory of relativity.
The theory provides a description of gravity.
The stencil sparked great discussion and excitement at the school, but it is unknown who the artist is.
Annabel Scott, the school’s development manager, said: “The unknown artist has clearly depicted that education has no boundaries and is always open to new discoveries.
“It also rather poignantly reflects Keswick School’s motto Levavi oculos.”
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