The author investigated the correlations among children's achievement, in terms of test scores, of the two languages (Chinese and English), and the Mathematics versus those scores given to the Art and Craft (or Art and Design) subject offered to primary and lower secondary classes in Hong Kong. A drawing project was also administered by the author, together with the art teachers, to a class of P2, P3, P5, and S1 students. Statistical analyses were run to look for any correlations which existed among these essential skills which stimulated students' creative and mental growth.