Joshua Adams was in Courtney Woods' year at Coal Hill School. He asked Clara Oswald if they were doing German when she wrote Tonnchenform on the whiteboard. She replied they were not, but congratulated him on knowing that that word was German.
In 2013, Clara took his class outdoors to learn about tardigrades. 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 saw. (PROSE: Normality)