A grammar school was a type of secondary school in the United Kingdom in the 20th century. Grammar schools, as opposed to secondary modern schools, were segregated by gender, and uniforms were required. Students were referred to by their surnames, and science was taught in three separate courses: chemistry, physics and biology.

As they demanded a higher calibre, the First Doctor chose to send Susan Foreman to a secondary modern school instead, as she failed an Eleven Plus exam he gave her, arguing with all the questions. (PROSE: Time and Relative)

According to one account, Coal Hill School was a grammar school in the 1960s, (PROSE: Nothing at the End of the Lane) as was Bowman's Grammar School. (PROSE: Potential) According to another account, Coal Hill was a secondary modern school, which was quite different from grammar schools at the time. (PROSE: Time and Relative)

Sir Charles Grover had been a master at a grammar school before going into politics. (PROSE: Doctor Who and the Dinosaur Invasion)

According to the Third Doctor, Jo Grant had attended grammar school. (AUDIO: The Havoc of Empires)

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