Office Of The Superintendent
Dr. Ryan Scallon - Superintendent
The Superintendent serves as the executive officer of the Portland Public Schools and is directly responsible to the Portland Board of Public Education.
He is responsible for a system of supervision and evaluation for all staff, and oversees and administers the use of all facilities, property, and funds in the best interests of students and the school system.
Growing up in Wisconsin, Dr. Ryan Scallon loved school. He had teachers who challenged and supported him. He completed projects that were interesting and connected to his passions. Ryan participated in extracurriculars and sports, had a strong social network, and school was a place he looked forward to each morning. Ryan was introduced to teaching in his first year of college when he taught world economics to a class of 6th grade students in West Philadelphia. Beginning with this experience, Ryan saw first hand that not all students receive the same opportunities or school based experiences he had growing up and he has spent his career working to change that.
After graduating with a degree in business from the Wharton School at the University of Pennsylvania, Ryan entered the teaching profession as a middle school math teacher while earning his teaching credentials at night. Teaching middle and high school math in Philadelphia followed by Milwaukee, Ryan built strong relationships with students and families and enjoyed the work but wanted to do more to support the opportunities offered to students across a school and district.
After completing the principal certification program at the University of Pennsylvania, Ryan was selected by New Leaders, a nationally recognized program for principal development, as one of 101 Resident Principals nationwide for a year-long residency designed to develop outstanding principals to lead high-achieving, urban schools.

Dr. Sarah Warren
Chief of Strategy and Operations
Sarah joined the Portland Public Schools team in the summer of 2023. She was thrilled to become part of the richly diverse, dynamic learning community that is the Portland Public Schools – and to return to her home state of Maine.
Sarah was born in Brunswick, raised in Hallowell and Manchester, and spent many weekends of her youth in Cape Elizabeth. She graduated from Maranacook Community School in Readfield and later went on to earn a B.A. from Haverford College and both a master’s in education and doctorate in Education Leadership from the Harvard Graduate School of Education.

Dr. Cheryl Proctor
Chief of Schools & Academics
Cheryl joins the Portland Public Schools in Maine after serving as the Deputy Superintendent of Instruction and School Communities for the Portland Public Schools in Oregon, where she led the offices of Teaching & Learning, School Performance, Student Support Services, Federal Programs and Innovation & Design. Cheryl previously served as Chief Academic Officer for PPS in Oregon, providing key leadership in the instructional and academic direction of the district.

Dr. Angela Atkinson Duina
Assistant Superintendent of Elementary Schools
The Assistant Superintendent of Elementary Schools coaches, mentors, supervises and evaluates elementary building leaders, and collaborates with the Superintendent, Principals, and other school system leaders to design and implement the programs and policies of the Portland Public Schools.
Angela returns to the Portland Public Schools from the University of Southern Maine, where she was assistant professor of educational leadership, while also coaching principals and leadership teams in a midcoast district.

Dr. Abdullahi Ahmed
Assistant Superintendent of Secondary Schools
The Assistant Superintendent of Secondary Schools coaches, mentors, supervises and evaluates secondary building leaders, and collaborates with the Superintendent, Principals, and other school system leaders to design and implement the programs and policies of the Portland Public Schools.
Dr. Ahmed began his teaching career in 2003 in the Portland Public Schools. He joined Deering in 2005 as a physical science teacher and became the first certified public school teacher of Arabic Language in Maine.
