Complex sentence: Kostiuk attended Hamtramck High School from 1934--1937, where he made All-City in 1935 and 1936, Detroit Tech from 1937-1940 on a football scholarship.
Split into simpler sentences: Kostiuk attended Hamtramck High School from 1934--1937, where he made All-City in 1935 and 1936. He attended Detroit Tech from 1937-1940 on a football scholarship.