The Next Generation Science Standards (NGSS Lead States 2013) were released almost two years ago. Work tied to the NGSS, their adoption, and implementation continues to move forward around the country. Stephen L. Pruitt, senior vice president, science, at Achieve, an independent, nonpartisan, nonprofit education reform organization that was a lead partner in developing the Next Generation Science Standards, writes in this article that he is most frequently asked about the pace of adoption by states, the implementation of the standards, and how the NGSS will be assessed. In this article, he discusses where we are now and what has been learned during the process so far. As the NGSS is implemented, he reminds us that education is a journey, not a destination.