If you are considering this, you need to check when exactly the schools start/end and what are their precise breakfast club/after school club arrangements. 'I think' is not really good enough if you are serious about this! You also then need to try out the timings during school run traffic.
We're coming to the end of two years of DD at nursery school and DS at school.
For dropping off, we generally share - DP takes one child, I take the other. When DP is away, elder child's school friends or neighbours help out. If that fails, I can take both, but one of them will be a little late - not much of an issue for nursery school child, especially as it is rare.
Friends use breakfast club which at our school is flexible, you can arrange one day/week or ad hoc or five days/week, whatever suits you.
For pick-up, three days/week my kids finish at exactly the same time so there is no chance of me being both places. Older child goes to after school clubs on those days - school extracurricular/sports clubs, not 'after school childcare' club. These generally last for an hour, giving me plenty of time to pick up DD and make my way to DS's school. This works really well, as DS would want to do clubs anyway, it is barely noticeable.
The downsides are
- that he doesn't get to pick the clubs he wants but has to take those on offer on the days we need. However this has also proved a positive, as he has discovered enjoyment of things he wouldn't have tried otherwise (dance, sewing).
- These clubs are not particularly reliable and can be cancelled on short notice. When that happens we improvise - friends take him home, playdate, pick DD up early so can arrive at DS's school in time, sometimes DP is around and can help.
- Same for beginning/end of term - these clubs usually start in week 2 or so, and finish well before the end of term, so there are a few weeks of scrambling around!
So you really need to know for both schools what the after-school childcare arrangements are, is there an AFC that your child can attend regularly e.g. on Tuesdays and/or ad hoc if school sports club is cancelled, how much does it cost, how long can children stay there.
Potentially you can find a mixture, so for example your younger child does football on Wednesday, your older child does dance on Tuesday, running club on Thursday and homework club on Friday, leaving you with Monday where older child goes to after-school childcare... something like that?! And then get socialising with other parents so you have connections in place, when clubs are cancelled, to share pick-ups.