This doctoral-level, academically based community service (ABCS) research seminar empowers local youth in West Philadelphia to identify, research, and address pressing community issues through evidence-based communication strategies. Working directly with Sayre High School partners, graduate students will co-develop research questions and communication campaigns that matter most to youth and their communities. While topics may include climate change, health, violence prevention, or other community concerns, the specific focus will be selected in collaboration with youth partners. Through learning about strategic messaging, social media engagement, and school/community outreach campaigns, students will develop an intervention in groups to foster meaningful community change. The course involves both scheduled seminars and required fieldwork at Sayre High School. Drawing on frameworks from communication theory, behavior change, and Youth Participatory Action Research (YPAR), students will engage in hands-on projects that empower youth voices and enable community action through communication. Graduate students will learn core theories about behavior change relevant to communication interventions and YPAR. They will gain experience designing and implementing a multi-method or mixed-methods study, combining qualitative with quantitative research techniques to conduct formative research, message design, and testing in partnership with youth. Through this project, students will develop proficiency in data analysis, interpretation, and presentation of findings. The course will also cover ethical and practical considerations in youth-centered research, relationship building, community engagement strategies, and effective facilitation skills. This course provides a unique opportunity for doctoral students to gain practical experience in participatory research while addressing pressing social, environmental, or health issues in the West Philadelphia community.