1,822 miles, according to Google Maps.
Yes, I went to a boarding school.
17.6 miles, also in rural NC. Hey Cisco, fellow former Tar Heel.
3.2 miles from my house to Pioneer High School. I didn’t have a car back then, so I took the bus or rode my bike most of the time. It was close enough to walk home if I missed the bus in the afternoon. On rare occassions my parents or a friend’s parents would give us a ride if the weather was particularly nasty.
OK, I just decided to do the Google thing…
Where I could walk, I was about 2km (~1 mile), by a walkable route (not the one I took, typically, but the distances are probably not that different); where I couldn’t, 9km and change (~4 miles) by roads (more or less the route the bus took).
Straight shots between them - ~1km and ~7km.
Mine was just over a mile, so far enough that I was in the bus zone, but close enough that when I stayed after for activities, it was a fairly easy walk home.
According to Google, 2.5 miles. But I rode the bus.
Actually, 9km is about 5.6 miles.
1 1/4 miles. I walked, it was colder then and snowed more not like now where the terrain is flat and air conditioning is everywhere.
7.3 miles, one CTA bus.
Google Maps took a different route than I would have, and got 1.2 miles. My route might have knocked off maybe .1 miles, so I go with my guess of “right at a mile.”
They take an even more stupid route to Junior High and get .9 miles, and I know my route was at least .2 miles closer. Google Maps is not very efficient for kids walking to school!
3.6 miles. When I left my parent’s house I moved even close, still live 2 miles away.
4.5 miles direct. But the route it took made it 5.5 miles. Central NJ - mostly rural.
According to Google, the path I would have driven is 2.4 miles from home to school. I also had the option of walking .7 miles to the school-bus stop and taking the bus, but that involved getting up really early, as the bus took a rather long path to school. Before I drove, I usually got a ride with the neighbor kids.
According to Google, 5.9 miles, in the middle of suburbia. But my high school was quite big, and its actual address is on the back side of the school, so the directions take into account driving past the road leading to the main parking lots and going around the campus. So I’m gonna say 5 1/2 miles.
I took the school bus for the first three months of my freshman year (which was a nightmare), before convincing my parents I could ride my bike. Drove the last two years.
The funny thing is, there’s another high school about two miles from where I lived, but I was zoned to go to the one I did. Which was fine with me - I didn’t want to go to that other, inferior (and rival) high school anyway. 
Bronx Science? Stuyvesant?
Without looking it up I would’ve guessed “a couple of miles”. Google maps makes it 1.6 miles. Which is about the same distance I lived from my first elementary school, but I walked there and we rode the bus to HS. The route to grade school did have sidewalks the whole way which wouldn’t have been true of walking to HS. That must be it.
About 3 miles when going to school.
After moving around a bit and up until about 3 months ago I lived about 1 mile from the high school I had gone to.
I went to boarding school, so about 350 miles.
6.27 miles per Mapquest. It was about a 20-minute drive through morning rush hour (I live(d) Montgomery County, MD, which is basically one big congested suburban sprawl). My dad dropped me off on his way to work, then I took the school bus home, which was about 30 minutes.
We lived in the sticks and it would have been a good 40 minute drive to my High School.