Coal Hill schoolyard Coal Hill School had a schoolyard , or playground . 1960s . In the 1960s , the crush hall led out to the playground . There were rules in said playgrounds — not school rules but kid rules — about fighting , and the things boys couldn ' t do to girls there . According to Susan Foreman , Gillian Roberts didn ' t count as a girl for this , but she did . ( PROSE : " Time and Relative " ) Sometime in 1963 , at lunch time on the day Susan brought the Blessing Star with her to school , she sat near a group of boys playing football in the playground . When the ball came her way , she instinctively kicked it back in the game , with an expert curveball into the back of the net . ( PROSE : " The Rag & Bone Man ' s Story " ) On 26 March 1963 , there was another thick fall of fresh snow , so the next day , Susan Foreman , John Brent and Gillian Roberts built a snowman . Gillian hoisted up a Year One student named Sadie Lederer to let her make the face . On 1 April at morning break , there was a big snowball fight , which was started by teachers . Ian Chesterton threw a snowball at the back of Mr Okehurst ' s head , and shouted , " April fool ! " Okehurst , in turn , authorised his football team to join the fight on his side . During the fight , Francis Minto threw a snowball full of marble s at Gillian . She flicked one of them back at him , hitting him right above the eyebrow and making him bleed . He hit their snowman with a cricket bat , barely even leaving a mark . Then the snowman came to life , and came after Minto , shooting spears of ice into his leg . Okehurst thought it was the girls ' fault , and sent them to the Head ' s Office . Later that day in detention , everyone there , including Susan , Gillian and Dudley Hatcher , had to clear up the snow and ice that had gathered around the playground area . The Cold made their attack while they worked , and everyone there but Susan and Gillian , including Mr Okehurst , was killed . ( PROSE : " Time and Relative " ) In November 1963 , a Dalek shuttle landed on the playground . When the Seventh Doctor and Ace arrived , a little girl named Judith Winters watched them from the gate , and later played hopscotch , chanting " five - six - seven - eight . It ' s a doctor at the gate . " The Doctor noticed the landing marks on the pavement . Later , the Dalek shuttle landed again in the same location . ( TV : " Remembrance of the Daleks " ) 2010s . In the early 2010s , Coal Hill had a giant chess board painted on the schoolyard pavement , with correspondingly sized chess pieces . ( TV : " The Caretaker " ) The Coal Hill Cadet Squad met on the schoolyard . ( TV : " Into the Dalek " ) In 2013 , Ben Ellison threw a water balloon at Kelly Squires as she walked across the schoolyard . ( PROSE : " Normality " ) In 2014 , Clara Oswald told Jack and Morgan that they could play chess on it , but when they instead played football , she made them clean up after themselves . A Skovox Blitzer later chased Clara across the playground and into the caretaker ' s storeroom . ( TV : " The Caretaker " ) 22nd century . Towards the end of the 22nd century , Susan found that the playground had since been torn up and replaced with a garden , Coal Hill having been converted to a block of flats over a hundred years prior . ( AUDIO : " All Hands on Deck " )