My family has loved our move to Piedmont and my kids, ages 7 and 3, have quickly found wonderful friends and activities through the Piedmont Neighbors and Newcomers Club. There is a weekly Monday play group that takes place in Piedmont park or other members homes and is sponsored by the PNNC. http://www.piedmontpnnc.com/upcoming-events
My kids love to meet other kids in the area and it is a great way for a new resident to meet new people in Piedmont. I'd be happy to show you around our beautiful city.
Like most residents of Piedmont, I moved to Piedmont in 1997 for the outstanding school system, ranked #29 in the nation by US News. Piedmont is very family oriented and many of the homes are close enough so children can walk to school. It is very desirable so home prices are 20-25% higher than in nice Oakland neighborhoods.
Piedmont Recreation Center has many programs after school and in the summer. You can learn more about all of these programs at http://www.ci.piedmont.ca.us/recreation/catalog.shtml
I'd be happy to share many great experiences my children and I have had because of living in Piedmont. Let me know if I can answer any other questions.
Here's a forum you should check out: The Berkeley Parents Network. This particular thread is about living in Piedmont.
We'd be happy to talk about schools, parent groups and lifestyle.
Our website might also be helpful at http://www.TheHighlandPartners.com