1912-1917 High Schools if living in Detroit?

[SMRJim]

Was your grandfather Catholic? If so, you could look at Assmption High School in Windsor. My Father grew up on the east side of Detroit and attended Assumption as a boarding school student circa 1935. Assumption was not a brand-new school even then. My Father played basketball.

That was my exact thought. A good friend of my brother attended Assumption, he lived on campus during the school year, played on their hockey team. That's the only high school I know of in Canada that someone living in Detroit may have gone to, though I'm sure there could be others.