As real estate agents, we are not allowed to "steer" you to or from any school district. As someone who went to school in Oak Park as a child I can say that I feel I received a great education. I thought growing up in Oak Park was great because there was something for everyone: sports, arts, libraries, etc. Also, we have two CTA train lines that lead to downtown and a Metra train line. I thought Oak Park was just close enough to Chicago make it to a Cubs game or a museum and my parents felt it was just far enough from the congestion and everything else that the city brings.
I have a blog that has to do with Oak Park and River forest if are interested checking it out, cut and paste or click on this: http://www.OPRFRealEstateBlog.com
Regarding things to do, not only in Oak Park but for our area, is http://www.chicagoparent.com and, Oak Park is proud to have a Childrens' Museum with all kinds of fun and learning activites. You wll love it here!
Michelle did a great job of summing up family life in Oak Park -- it's pretty phenomenal here! It's a quick 10 minute drive to Brookfield Zoo as well. We are also connected to the Chicago Transit System, so getting to downtown Chicago is a breeze! Tons of museums, parks, nature centers, beaches, etc. -- I'm sure you and your family would be very happy here!
Best of luck,