Greenwich Public Schools Executive and Leadership Team

September, 2026

Leadership Overview

Greenwich Public Schools has 5 executives leading key functions including human resources, financial administration, and community advocacy.

Committed to academic excellence and social-emotional growth, Greenwich Public Schools fosters a supportive environment where students achieve high standards and prepare for compassionate citizenship within the broader community.

Leadership Roles at Greenwich Public Schools

  • President, Greenwich PTA Council - Karen Hirsh
  • Executive Assistant To Chief Human Resources Officer - Marissa Mazzone
  • Executive Assistant To Chief Human Resources Officer - Susana Valenzuela
  • Chief Human Resources Officer - Jonathan Budd
  • Chief Financial & Administrative Officer - Ben Branyan
  • Karen Hirsh - President, Greenwich PTA Council

    Karen Hirsh, the President, Greenwich PTA Council at Greenwich Public Schools, leads community engagement efforts to bridge the gap between families and district leadership. Representing the interests of parents and students, Hirsh coordinates advocacy initiatives that support academic achievement and social-emotional learning. The President, Greenwich PTA Council facilitates communication across all school levels, ensuring that community feedback informs district policy decisions. By organizing volunteer efforts and educational programs, Karen Hirsh strengthens the partnership between the schools and the broader Greenwich community. This leadership role involves working closely with the administration to promote transparency and inclusivity in educational planning. The President, Greenwich PTA Council also manages outreach campaigns that highlight the importance of compassionate citizenship and student success. Through dedicated advocacy, Hirsh ensures that the voices of families remain central to the district's mission of providing high-quality education to every student.

    Marissa Mazzone - Executive Assistant To Chief Human Resources Officer

    Marissa Mazzone, the Executive Assistant To Chief Human Resources Officer at Greenwich Public Schools, manages complex administrative workflows supporting the district's human capital strategy. Coordinating daily operations for the human resources department, Mazzone ensures seamless communication between staff and leadership. This role involves organizing recruitment documentation and maintaining personnel records for the eleven elementary schools, three middle schools, and one high school. By streamlining internal processes, the Executive Assistant To Chief Human Resources Officer facilitates efficient talent management across the district. Marissa Mazzone also assists in the preparation of board reports regarding staffing levels and professional development initiatives. Through meticulous attention to detail, the Executive Assistant To Chief Human Resources Officer supports the broader mission of maintaining high academic standards. This position requires constant collaboration with administrative teams to uphold the district's commitment to excellence in education and community engagement.

    Susana Valenzuela - Executive Assistant To Chief Human Resources Officer

    Susana Valenzuela, the Executive Assistant To Chief Human Resources Officer at Greenwich Public Schools, oversees the logistical coordination of district-wide employee benefits and compliance programs. Focusing on the operational needs of the human resources division, Valenzuela manages scheduling and correspondence for special education services and magnet school staffing. The Executive Assistant To Chief Human Resources Officer maintains critical databases that track teacher certifications and district-wide compliance requirements. By optimizing these administrative functions, Susana Valenzuela enables the human resources leadership to concentrate on strategic talent acquisition and retention. This role demands high-level organizational skills to support the diverse educational programs offered throughout the district. The Executive Assistant To Chief Human Resources Officer also coordinates meetings with external stakeholders to ensure alignment with state educational mandates. Through consistent support of human resources operations, Valenzuela contributes to the overall stability and success of the district's educational mission.

    Jonathan Budd - Chief Human Resources Officer

    Jonathan Budd, the Chief Human Resources Officer at Greenwich Public Schools, directs the strategic recruitment, development, and retention of educators across the district. Overseeing the human capital needs for eleven elementary schools, three middle schools, and one high school, Budd ensures that every classroom maintains high academic standards. The Chief Human Resources Officer designs professional development programs that emphasize social-emotional learning and community engagement. By aligning staffing strategies with the district's educational goals, Jonathan Budd fosters a culture of excellence and compassionate citizenship. This leadership role involves frequent collaboration with the Board of Education to address labor relations and policy implementation. The Chief Human Resources Officer also manages the integration of special education staffing requirements into the broader organizational framework. Through proactive talent management, Budd secures the high-quality workforce necessary to support the diverse needs of students and families within the Greenwich community.

    Ben Branyan - Chief Financial & Administrative Officer

    Ben Branyan, the Chief Financial & Administrative Officer at Greenwich Public Schools, manages the fiscal health and operational infrastructure of the entire district. Overseeing the allocation of resources for eleven elementary schools, three middle schools, and one high school, Branyan ensures that financial strategies support the district's core mission of academic excellence. The Chief Financial & Administrative Officer directs budget planning, facility maintenance, and administrative services to optimize the learning environment. By monitoring expenditures and revenue streams, Ben Branyan provides the financial stability required for special education services and magnet school programs. This leadership role involves reporting to the Board of Education on long-term capital projects and operational efficiency. The Chief Financial & Administrative Officer also coordinates with regional partners to ensure that administrative functions align with state requirements. Through rigorous financial oversight, Branyan enables the district to provide high-quality educational opportunities for all students.

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    Frequently Asked Questions Regarding Greenwich Public Schools Top Executives and Leadership Team

    Who leads Greenwich Public Schools?
    Greenwich Public Schools is led by Karen Hirsh (President, Greenwich PTA Council), along with executives such as Marissa Mazzone (Executive Assistant To Chief Human Resources Officer) and Susana Valenzuela (Executive Assistant To Chief Human Resources Officer).
    Who is part of Greenwich Public Schools’s executive team?
    The executive team of Greenwich Public Schools includes leaders such as Karen Hirsh (President, Greenwich PTA Council), Marissa Mazzone (Executive Assistant To Chief Human Resources Officer), Susana Valenzuela (Executive Assistant To Chief Human Resources Officer) and other senior executives.
    How many executives does Greenwich Public Schools have?
    Greenwich Public Schools has 5 executives leading key business areas.
    What roles are included in Greenwich Public Schools’s leadership team?
    The leadership team of Greenwich Public Schools includes roles such as President, Greenwich PTA Council, Executive Assistant To Chief Human Resources Officer, Executive Assistant To Chief Human Resources Officer, Chief Human Resources Officer, Chief Financial & Administrative Officer.