The school uniform issue....

Christ's Hospital school's approach dates back over 350 years.

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"Since its establishment, Christ's Hospital has been a charity school, with a core aim to offer children from humble backgrounds the chance of a better education. "

https://en.wikipedia.org/wiki/Christ%27s_Hospital

"The distinctive uniform of Christ's Hospital is provided free to all pupils, who all wear the outer blue coat, breeches (boys), pleated skirts (girls), white shirt with 'bands', yellow socks (for all boys and junior girls) and leather belts."

https://www.christs-hospital.org.uk/about-ch/history-of-the-uniform/the-uniform/

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"The Tower of London offers free entry to pupils wearing their bluecoat uniform. The origins of this tradition are uncertain, although it was written about by Charles Lamb, a pupil in the 1780s"

https://www.christs-hospital.org.uk/about-ch/traditions/