Yes, it is still open. Read the below and follow through with the link provided.
For the source and more detailed information concerning your request, click on the related links section (Wikipedia) indicated directly below this answer section.
Yes, Mackenzie High School was/is in Detroit. The building is still there, but the school has been closed since 2007.
Frank Cody High School was created in 1955.
In 1964, Cody High School in Detroit, Michigan, had an enrollment of approximately 3,000 students. This figure reflects the peak period of enrollment during the mid-20th century when the school served a large and diverse student body. The school has since experienced fluctuations in enrollment numbers, influenced by various demographic and socio-economic changes in the area.
The motto of Detroit Cristo Rey High School is 'The School That Works!'.
Detroit Cristo Rey High School was created in 2008.
Greenwich High School in Greenwich, CT
Lassiter High School, Marietta, GA
Detroit Lakes High School's motto is 'Make it a Great Day or Not, The Choice is Yours'.
Renaissance high school
Detroit Catholic Central High School's motto is 'Motto: Teach Me Goodness, Discipline, and Knowledge'.
Prattville High School.
Prattville High School, now #74