ronbo, we work hard to find a measurable way to show our impact and I think you're right in pointing out that this isn't great. The way we calculated this was by dividing the entire cost of the project by the number of bricks needed to rebuild the school. The money we donate from each pack buys significantly more than 2 bricks, obviously, but this also includes concrete, roofing materials, labor, architectural plans, rebar, etc. We'll work on finding a better way of communicating this. We loved the idea of showing the impact by the number of bricks needed, but I think it falls short of showing the actual impact. Thanks for the feedback - very helpful!