Adopted by 40 states, including New York, the Common Core Standards for education are designed to insure that students master the high level reading, writing, and thinking skills they need for college and career readiness. ASHP/CML has been asked by the New York City Department of Education to develop and test classroom materials that will help social studies teachers integrate the Common Core Standards into their teaching. Using materials from our HERB: Social History for Every Classroom, we have developed two units that contain a sequence of lessons and a final performance task that aligns with selected Common Core Standards. Teachers in our Teaching American History professional development programs are testing these units in their classrooms this month and will collect samples of the resulting student work, which we will analyze in order to refine the lessons.