Edward Caradus (6 December 1885 – 15 February 1969) was a New Zealand analytical chemist, educator and administrator. He developed a model for training aircrew during World War II. In 1949 he became the first chair of the National Trades Certification Board. Early life Caradus was born in Auckland, New Zealand in 1885. His paternal grandparents, James and Elizabeth Caradus, had emigrated to New Zealand in 1842 on the ships Jane Gifford and Duchess of Argyle. Between 1897 and 1902 Caradus was educated at Auckland Grammar School, where he won a scholarship to attend Auckland University College. In 1904, while at university, Caradus was awarded the Sir George Grey Science Scholarship in chemistry. He graduated from Auckland University College with a Bachelor of Science in 1906. Caradus joined the Waihi Grand Junction Gold Mining Company in Waihi as an analytical chemist in 1906, but in 1908 decided to pursue a career in education. George Douglas Robb was one of his early pupils and commented in his autobiography that chemistry, presented by Caradus in a didactic way, fired his imagination. Caradus taught at Wellington College from 1909 to 1913 before becoming senior science master at Auckland Grammar School (1913–22) and first assistant at Nelson College (1922–26). He was appointed an inspector of secondary schools in 1926. In 1937 he was promoted to senior inspector and in 1941 he became the chief inspector of secondary schools. Caradus was a member of the University Entrance Board and assisted the University of New Zealand to review the results of University Entrance and University Entrance Scholarship examinations. He later made study of examination procedure and technique in relation to the New Zealand University Entrance examinations, which was published in about 1960. World War II In 1938 Caradus was the educational advisor to the Air Department. In 1942, during World War II the Royal New Zealand Air Force (RNZAF) appointed Caradus as its director of educational services with the rank of wing commander, while he also continued to work as senior inspector of secondary schools. Caradus was charged with the responsibility of ensuring a steady flow of appropriately educated young men, who would go on to train as aircrew with the RNZAF and the RAF. In 1941 he was appointed chief inspector of secondary schools, but in 1943 the government decided his position of director of educational services was required on a full-time basis, and he