School Leadership

Mayfield's leadership team serves as stewards of our cherished Holy Child legacy

Mayfield's strong leadership team begins with the collaborative relationship between Head of School Kate Morin and Board of Trustees Chair Erika Randall. It extends to the school's deeply committed administrators, who bring a diversity of experience and valuable skills to their jobs. We are blessed at Mayfield that our school leadership team puts the care and welfare of our precious students and our calling to embrace Holy Child values at the center of all decisions.

Administration Team

List of 13 members.

  • Photo of Kate Morin

    Kate Morin 

    Head of School
    (626) 799-9121 ext. 213
    University of Maryland, College Park - B.A.
    New York University - M.A.
    University of Maryland, College Park - M.A.
  • Photo of Toi Treister

    Toi (Webster) Treister 82

    Assistant Head of School for Academics, Social Science Teacher
    (626) 799-9121 ext. 263
    California State University, Los Angeles - B.A.
    Southwestern College of Law - J.D.
  • Photo of Angela Howell

    Angela Howell 76

    Associate Head of School for Strategic Initiatives
    (626) 799-9121 ext. 223
    Stanford University - B.A.
    Claremont Graduate University - M.A.
  • Photo of Steven Bergen

    Steven Bergen 

    Director of Athletics
    (626) 799-9121 ext. 242
    University of California, Davis - B.A.
    Pepperdine University - M.A.
  • Photo of Lela Diaz

    Lela Diaz 

    Campaign Director
    University of Southern California - B.A.
    Loyola University Chicago - Certificate of Advanced Study in Philanthropy
  • Photo of Amber  Gravely

    Amber  Gravely  

    Director of Justice, Diversity, Equity & Inclusion (JDEI)
  • Photo of William Lewis

    William Lewis 

    Director of Facilites
  • Photo of Lauren Marks-Nino

    Lauren Marks-Nino 98

    Director of Communications
  • Photo of Merilisa Ramirez

    Merilisa Ramirez 

    Director of Admissions
    (626) 799-9121 ext. 287
    Cal Poly Pomona - B.A.
  • Photo of Cynthia Riegsecker

    Cynthia Riegsecker 

    Director of Finance
    (626) 799-9121 ext. 211
    San Diego State University - B.S.
  • Photo of Lisa Vandergriff

    Lisa Vandergriff 

    Director of Development
    (626) 799-9121 ext. 428
  • Photo of Abigail Shaw

    Abigail Shaw 

    Dean of Students
    (626) 799-9121 ext. 308
    University of California, Los Angeles - B.A.
  • Photo of Tina Zapata

    Tina Zapata 

    Dean of Faculty, Social Science Teacher
    (626) 799-9121 ext. 254
    Loyola Marymount University - Certificate in Catholic School Administration
    University of California, Berkeley - B.A.
    Stanford University - M.A. in Education & California Teaching Credential

Board of Trustees 2022-23

Erika Randall
Vice Chair & Secretary
Jane Hawley ’86

Brent Callinicos

Amber Berrios '07
Representative for the Society of the Holy Child Jesus
Sr. Sheila McNiff ’56, SHCJ
Michael Alvarez
Wellington Choi
Brittney Dennis Pruitt ‘03
Ferari Domingo-Vu
Alison Jones Gamble ‘87
Alison Shea Knoll ‘87
Rev. Dorian Llywelyn, SJ
James Lo Coco
Lora McManus-Graham ‘14
Jim Muenzer
Kelly Nelson Nakasone ‘93
Charlotte Reid ‘86
Shadi Sanbar
Ryan Squire
Chelisa Vagim
Richard Vargas

Honorary Trustees

Marla Alders 
R. Daniel Banis
Janice Kincaid Clifford
Thomas J. Condon
Msgr. Clement J. Connolly 
David A. Coquillard
Joseph S. Eisele
Richard M. Ferry
Victoria Howell Fuster de la Riva ’69
Joseph G. Gorman
Charles M. Grace
Edward J. McAniff
James Murphy
Teresa Bannan Nally ’50
Joyce O'Hagan Nores ’49
Charles Norman
Terre L. Osterkamp
Richard Riordan
Edward C. Roohan
John F. Shea, Sr.
Joseph Skenderian
Kevin T. Slattery
Stephen R. Sweeney
Peter D. Tamny
Gary F. Thompson
Raymond J. Walsh
Eileen Zimmerman
Established in 1931, Mayfield Senior School in Pasadena, CA is a Catholic, independent, college preparatory school for young women grades 9-12. Noted for its rigorous academic program, which includes 28 Advanced Placement and Honors courses, Mayfield’s curriculum is underscored by a philosophy of educating the “whole child,” which also encourages commitment to and excellence in the arts, athletics, community service and spiritual growth. The nurturing environment at Mayfield Senior School allows each student to flourish in an atmosphere of personal attention.