This paper describes Clarion University of Pennsylvania's TACCOL (Technology Advancing a Continuous Community of Learners) program. TACCOL develops and implements an innovative environment for interfacing technology with mathematics and science education while achieving and maintaining systemic change in teacher education and K-12 learning. TACCOL's goal is to provide professional development for higher education faculty, prospective teachers, and cooperating teachers from local school districts to enhance instruction in mathematics and science through the use of computers, graphing calculators, calculator-based rangers, calculator based-laboratories, and multiple probes. A variety of professional development activities have been used to enable participants to acquire minimum competencies. Participants learn through hands-on, interactive activities, with a constructivist approach to teaching and learning. TACCOL will be sustained through continued university and school professional development opportunities, curricular change, and the ongoing integration of technology into mathematics and science content classes. Since university faculty have been trained to use the technology, they are integrating technology use into general education and methods courses for prospective teachers. Prospective teachers are feeling confident about integrating technology into their future classrooms. Practicing teachers who participated in summer workshops are prepared to integrate technology into their classrooms. (SM)