Literally no one at my schools walked there. I personally lived 9.5 km from my high school which is the closest high school by a long shot. The school district (and its only high school) served a 440+ square km area, so I wasn’t even on the far end of things. Only the very last bit of getting there would have sidewalks. (A majority of the walk would be along roads like this maps.app.goo.gl/MfAsP2SJgVTmnEzu5?g_st=ic ). At least a mile of the walk (which my parents did let me do from 8years on) is unmaintained dirt road.

Oh and at the start of the school year, it’s not unusual that the temp is 31 c.