Maud, Thanks so much for looking over our information. We actually have many teachers in urban setting using the program and they adapt to fit their circumstances. Safety is so important in these schools. Teachers will walk around a secure school yard or even establish a route through the school building (they are quiet while they walk, so not disruptive!). And while word of mouth is the most powerful way of spreading the message about The Walking Classroom, it is a major priority for us to raise awareness about our program. We exhibit at conferences, advertise in the National Afterschool Assocation magazine and online, and use iContact messaging to reach the over 40,000 folks we have in http://Salesforce.com (right now!). Our adopters also actively publicize their use of our program via social media (blogs, Facebook, pinterest, etc). All of this has helped us grow to 1,000 teachers/out-of-school time professionals currently using our program across the country!