This guide and glossary provides a variety of career development Education (CDE) activities, along with definitions and frameworks to assist with efforts to create or expand and improve these activities. The guide is geared towards K–12, but the activities and resources are easily adaptable to adult education. It was developed by Massachusetts Department of Elementary and Secondary Education with the input and assistance of experts from the fields of education and workforce development who are committed to advancing the work of CDE across the Commonwealth.