Central Administration - Senior Staff
William H. Lupini, Ed.D.
Superintendent of Schools
William H. Lupini has served as Superintendent of Schools in Brookline since July, 2004. Prior to coming to Brookline, Dr. Lupini served as Superintendent for seven years in Beverly, Massachusetts, and for two years in Kutztown, Pennsylvania.
Dr. Lupini currently serves as President of the Massachusetts Association of School Superintendents (MASS) and recently completed a term as President of the Minority Student Achievement Network (MSAN) Governing Board. He has also served on the Special Commission on Education Collaboratives and the Commission on Achievement Gaps. He teaches School Law in a number of programs for aspiring school administrators.
Dr. Lupini has also worked as Director of Curriculum and Instruction and Assistant High School Principal in Kutztown, as well as having worked as a Program Specialist with the New Jersey Department of Education. He also taught Marketing Education at Maple Shade High School in New Jersey and Bucks County Technical School in Pennsylvania.
Dr. Lupini holds an Ed.D. in Educational Leadership and Administration from Lehigh University, a Master of Education degree in Leadership, Administration and Supervision from Rider University, and a Bachelor of Science Degree in Marketing and Business Education from Indiana University of Pennsylvania.
Mary Ellen Dunn
Deputy Superintendent for Administration and Finance
Mary Ellen Dunn joined the Public Schools of Brookline in July 2015. Ms. Dunn has served as the Assistant Superintendent for Finance and Operations for the Lexington Public Schools for the past eight years. Prior to assuming her current role in Lexington, she served as the Director of Fiscal and Management Services in Natick Public Schools for four years. In addition, she has served as the Director of Finance and Operations in Needham Public Schools and as a certified Town Treasurer and Tax Collector in the Town of Sudbury. She started her professional career as a Presidential Management Intern with the US General Accounting Office, now known as the US Government Accountability Office. Ms. Dunn has a breadth and depth of municipal finance knowledge and experience that crosses both school and the municipal boundaries.
Ms. Dunn is also an active and engaged member in many professional organizations and has received numerous awards for her outstanding contributions. She is a past president of the Massachusetts Government Finance Officers Association and a past board member of MASBO as well as a recipient of the Donald D. Johnson Operational and Cost Efficiency Award in Lexington Public Schools in 2011. She currently serves as an instructor and mentor for many school business administrators in the areas of municipal finance law, policy analysis, program evaluation, and is an advocate for fostering collaborative partnerships within schools and municipal departments.
Ms. Dunn holds a Masters of Public Administration from Suffolk University, School of Management with a concentration in Government Finance and a Bachelors of Arts in Political Science from the University of Massachusetts (Amherst).
Jennifer C. Fischer-Mueller, Ed.D.
Deputy Superintendent for Teaching and Learning
Jennifer C. Fischer-Mueller joined the Public Schools of Brookline in 2002. Her former administrative positions have included Assistant Superintendent for Curriculum and Professional Development, Amherst, NH and Dean of Faculty, Souhegan High School, Amherst, NH. For a total of thirteen years, Dr. Fischer-Mueller taught science at Souhegan High School, Hollis/Brookline High School, Hollis, NH, and Spaulding Junior High School, Rochester, NH. As a teacher, she received a variety of awards and achievements, including Tandy Technology Excellence in Science Teaching Award and the honor of CitiBank National Faculty.
Dr. Fischer-Mueller holds a Bachelor of Science in Biology and a Masters of Arts in Teaching from the University of New Hampshire, along with a Doctorate of Education, from the University of Massachusetts/Lowell.
Director of Human Resources
Elaine O’Sullivan joined the Public Schools of Brookline as Director of Human Resources in August 2015. Ms. O’Sullivan served as the Director of Human Resources at Massachusetts College of Art and Design, a position she has held since 2007. She has also served Framingham State College for four (4) years as the Director of Human Resources, Affirmative Action and Disability Services, and as the Assistant Director of Human Resources for the Boston Police Department. She started her professional career at Hay Management Consultants, an international human resources consulting company, which provided her with an opportunity to work with a wide spectrum of clients, both public and private.
Ms. O’Sullivan holds a Master of Public Administration from Suffolk University and a Bachelor of Arts from Saint Anselm College.
Karen Shmukler, Ed.D.
Assistant Superintendent for Student Services
Karen Shmukler joined the Public Schools of Brookline in 2005. Prior to this, Karen worked for over a decade as Senior Executive of Child and Family Services at Brockton Area Multi-Services where she established a national reputation for her work utilizing the wrapound process in the arenas of public mental health, public child welfare and public education.
Dr. Shmukler received her Clinical Psychology degree from the University of the Witwatersrand in Johannesburg, South Africa. She is a Licensed Marriage and Family Therapist (LMFT). Karen received her Doctorate of Education from Nova Southeastern University.
Dr. Karen Shmukler can be reached by email at