Private boys-only day school, Catholic (order, not parochial).
Mom meant well, I don’t blame her 
Attended 8 years of Catholic grade school and 4 years of Catholic high school.
I went to a military boarding school that promotes high academic standards, strong sporting interests and a rigorous code of conduct. If your teen is considering a career in the military, attending a military boarding school can be an excellent launching pad to such a career.
I’m an American: Went to public HS until SR year of HS, transferred to school for disabled (run my state DPH), while it did have day students, VAST majority lived on campus during the week.
That’s exactly how the one guy I knew who went to a military school described it. He said they were very much focused on getting their graduates into the service academies or Ivy League, alot of students were sons of officers, and it most definately not (he was quite clear on this) a place for delinquents (which apparently some applicant parents were under the impression it was). Any with drug or behavioral problems was quickly expelled.
I went to Arson and Dope Middle School and Pillhead High School, where Gus Hall, leader of the communist party, had repeatedly been elected president of the student body…
Wait, I went to a typical public school.
I went to a public senior high school in Maryland. It had grades 10, 11, and 12. At the time, the academics were high standard. However, it started going downhill about 5 years after I graduated.
Two years in an academically forward-leaning, socially regressive Catholic all-girls school run by the Sisters of Mercy.
Two years in an academically ass-backward, socially stifling Christian co-ed school run slightly in conjunction with a now defunct non-denominational, independent Pentecostal church.
Catholic (but not very) boarding school in England.
The kind of training and exposure that your child will get from a military high school will certainly give him/her an edge to get into the military or military academy. Students from military high schools get the benefit of excellent education to go with the discipline, leadership training, and the drive for excellence and achievement. However, military schools and the military have their own admissions process and standards that apply to everybody. Even if your child came from a military high school, it doesnt’ guarantee them a ticket into these higher institutions.
Plus, developing leadership skills in an environment that’s free from oppression, and having the opportunity to manage long and short term projects in a boarding school with their peers immerses teens in cooperative management practices, and helps create leaders.