caseby went to primary school at dairsie. he later attended harris academy, which was at the time a selective secondary school in dundee, scotland. he received an average pass mark of 68% in his first year. the subjects he studied included horticulture, agriculture, forestry, and the bible. during the first world war, many of his teachers went to help with the war effort. because he was still too young, at sixteen and a half years old, he delivered mail to pay for his academic studies and entrance exams.