Angelo State University (ASU), in partnership with Texas borderlands school districts and the National Weather Service Office in San Angelo, Texas, are recipients of a NOAA Environmental Literacy Grant Priority 1 grant titled "Earth System Sciences for Elementary Teachers" (ESSET). This project will: 1) Increase the knowledge and skills level of 25 elementary in-service teachers regarding best practices for teaching integrated Earth System Science concepts in a learner-centered, outdoor environment; 2) Increase teachers' ability to align integrated science content with Texas standards-based curriculum and NOAA's Education Strategic Plan; and 3) Integrate concepts of environmental stewardship with teachers' newly acquired pedagogy and science content. Participants will receive nine semester-hours of ASU graduate credit, and a variety of tools and equipment for their classrooms following successful completion of this 18-month project. Anticipated results include increases in overall integrated science content knowledge, best practices, and self-efficacy for participating teachers. Scaling-up this proof-of-concept project to catalyze change across Texas will occur near the end of ESSET.