Our dc are 1 and 6. Older one is in school 8:30-3 during term time and holiday club 8:30-4:30 during school holidays (3 days a week, we share a mix of days off with her the other days during school holidays, or my dh takes her to work with him, he's self employed). Younger one is in nursery year round 8:45-4:45.
We work flexibly and share the school runs and afterschool hours, as we have no family help and we don't use any sort of afterschool club, etc. Dh does school runs usually 2-3 days a week (I work long days those days as I commute) and I do school runs the other 2-3 days and work from home. On the days, we do the school run, our main work days are shorter, 9am-2:45pm, so school hours, but then we do a bit of extra work from home in the afternoons (catch up on emails) and work 1-2 hours in the evenings.
It's honestly not a bit deal for us, but the key is that we both have careers with a lot of built in flexibility and independence. Dh is self employed, so can build work around family life and I work in a profession that doesn't typically have standard 9-5 hours. It's very normal for people in my field to work from home, work weird middle of the day hours to accommodate meetings, but do other work in the evenings, weekends, while commuting, etc. It would be a lot harder if we had different sorts of jobs where you had to clock in and out at certain hours and where working from home wasn't the norm.