Sam Kaye-Jones was in Courtney Woods' year at Coal Hill School.
In 2013, Clara Oswald took her class outdoors to learn about tardigrades. Sam said she'd better not get a sunburn in the heat, as her father would be livid.
Once they got settled on the grass, she instructed them to look up at the sky for ten seconds, then to shut their eyes, count to five, open them again and tell her what they see. She presumably went on to explain, as the Eleventh Doctor did to her, that the little things floating in their line of vision were tiny creatures, and they were everywhere. (PROSE: Normality)