DD is nearly 14. High school is just under a mile away in our town, a country market town. Lots of children walk every day.
She has walked every day since she started there aged 11, unless it's been absolutely hammering down - then I would usually take pity on her and give her a lift. And quite often if I've been out shopping in the afternoon around that time, I'll text her and drive past the school to pick her up.
I don't have a car - DH uses our car for work, but my mum & dad live 5 minutes away and I have use of their car whenever I need it, they hardly ever use it except for shopping.
Tomorrow I'm taking mum & dad out, and mum just rang telling me to pick up the car tonight. I said I'd walk round there in the morning, and she said no, I should pick it up tonight so I could take DD to school in the morning. I said no, she is going to walk, and my mum got all huffy and said what if it's raining, it's so windy etc etc. I got a bit shorp and shart with her and said quite crossly "DD is WALKING".
Mum seems to remember that my dad "was always" picking me up from school. Er, no. Dad worked. He did pick me up, once a week, from an evening class that ended after dark, in London. My mum seems to think that I'm being 'hard' on DD, basically she's being the typical doting grandmother - shame she wasn't like that with me when I was little! 
DD is perfectly capable of walking. She is getting a bit chubby and doesn't do a lot of exercise, and I think the walk is something she needs to do! I'm not being draconian, am I?