You might find this site useful:
http://www.basel.ch/
This assumes that you are going to place your children in local schools. The site tells you a bit about education here, but no map I'm afraid. When looking at property, most will tell you how far the nearest schools are.
Generally children are expected to walk/make their own way to school here from age ~7 onwards. This means that usually there will be a school not far from you, so I wouldn't worry too much about where schools are, unless you are looking to get into a particular catchment area. For example, some people can be snobby about schools if there are too many non-Swiss children there (i.e. too many Turks or Slavs - sad by true).
Another thing, is that many Swiss folk that I've spoken to have told me that BL schools are better than BS schools.