Meet the Team
Katherine A. Gonzalez
Assistant Head of School for Enrollment Management
Phone: (440) 423-2952Email: katherine.gonzalez@hawken.edu
Kathy Gonzalez joined the Hawken community in 2018 after serving 13 years as the Director of Enrollment Management at University Prep in Seattle, WA. She has worked in independent schools for more than 25 years and was drawn to Hawken for its innovation in education and commitment to building each student’s character and intellect. Kathy is a founder of the Puget Sound Independent Schools (PSIS) admission consortium and Seattle’s annual Independent School Fair for People of Color. For seven years Kathy served on the National Association of Independent Schools (NAIS) Call to Action, a national think tank and advisory council on diversity in independent schools. In addition, she chaired the NAIS People of Color Conference in Seattle, WA in 2006. The Enrollment Management Association (EMA) named Kathy the 2016 recipient of the Everett E. Gourley Award, given to an educator whose interest in students and concern for colleagues is an inspiration to those who serve in admission.
Currently, Kathy serves on the board of trustees for the Educational Records Bureau (ERB) in New York City, now in her third term. She also serves as a mentor for Leadership for Enrollment and Admission Professionals (LEAP), a co-sponsored program by the Association of Independent School Admission Professionals (AISAP) and Vanderbilt University.
A Seattle native and proud mother of three adult children, Ayana (29), Coryn (27) and Elijah (23), Kathy enjoys spending time with her family and friends, and cooking, gardening and listening to live music with her husband Margarito.
Siobhan Martin
Director of Flexible Tuition;
Assistant to the Assistant Head of School for Enrollment Management
Assistant to the Assistant Head of School for Enrollment Management
Phone: (440) 423-2986
Email: siobhan.martin@hawken.edu
Siobhan Martin joined Hawken in 2024 after serving as director of finance at a local Ohio independent school. Her extensive expertise in financial management is matched by a deep commitment to ensuring every student has access to quality education. Siobhan's career in education has ranged from teaching mathematics to optimizing school finances, all driven by her passion for equitable educational opportunities. With an MBA from Purdue University and a background in Political Science, Siobhan combines analytical rigor with a genuine dedication to student success. Beyond her role at Hawken, she enjoys traveling, cooking, and hosting events for family and friends.
Siobhan Martin joined Hawken in 2024 after serving as director of finance at a local Ohio independent school. Her extensive expertise in financial management is matched by a deep commitment to ensuring every student has access to quality education. Siobhan's career in education has ranged from teaching mathematics to optimizing school finances, all driven by her passion for equitable educational opportunities. With an MBA from Purdue University and a background in Political Science, Siobhan combines analytical rigor with a genuine dedication to student success. Beyond her role at Hawken, she enjoys traveling, cooking, and hosting events for family and friends.
Upper School, Grades 9-12, Gates Mills Campus
Maggie Jackson
Director of Admission, Upper School
Phone: (440) 423-2139
Email: maggie.jackson@hawken.edu
Laura Lewis
Assistant Director of Admission, Upper School;
Marketing Liaison
Phone: (440) 423-2952
Email: laura.lewis@hawken.edu
Laura joined Hawken in 1998. She brings her knowledge of Hawken history and her work in marketing and communications to the Admission Office as she helps families through the admission process. She is also a Certified Admission and Enrollment Management Professional as designated by the Association of Independent School Admission Professionals. Laura is the mother of two Hawken graduates who attended Hawken Lower, Middle and Upper School. She has a BA in Music from the University of Virginia, and in her spare time produces traditional music events for the Northeast Ohio community.
Marketing Liaison
Phone: (440) 423-2952
Email: laura.lewis@hawken.edu
Laura joined Hawken in 1998. She brings her knowledge of Hawken history and her work in marketing and communications to the Admission Office as she helps families through the admission process. She is also a Certified Admission and Enrollment Management Professional as designated by the Association of Independent School Admission Professionals. Laura is the mother of two Hawken graduates who attended Hawken Lower, Middle and Upper School. She has a BA in Music from the University of Virginia, and in her spare time produces traditional music events for the Northeast Ohio community.
Debby Horowitz
Admission Counselor, Upper School;
Visit Day Coordinator
Phone: (440) 423-2070
Email: debby.horowitz@hawken.edu
Debby joined the Hawken community in 2008 as an Upper School math teacher and the varsity girls golf coach. She also served as the Math Department Coordinator for 10 years. Over her 16-year tenure, Debby has taught various math classes, including Algebra 1, Algebra 2, Precalculus, Calculus, Personal Finance, and SAT/ACT Math Prep. She holds a B.S. in Integrated Mathematics Education from Miami University and an M.Ed. in Instructional Technology from Kent State University. A Cleveland native and proud mother of two girls, Debby enjoys spending time with her family and friends, scrapbooking, riding her Peloton, and golfing with her husband, David '04.
Visit Day Coordinator
Phone: (440) 423-2070
Email: debby.horowitz@hawken.edu
Debby joined the Hawken community in 2008 as an Upper School math teacher and the varsity girls golf coach. She also served as the Math Department Coordinator for 10 years. Over her 16-year tenure, Debby has taught various math classes, including Algebra 1, Algebra 2, Precalculus, Calculus, Personal Finance, and SAT/ACT Math Prep. She holds a B.S. in Integrated Mathematics Education from Miami University and an M.Ed. in Instructional Technology from Kent State University. A Cleveland native and proud mother of two girls, Debby enjoys spending time with her family and friends, scrapbooking, riding her Peloton, and golfing with her husband, David '04.
Halle Shane
Admission Coordinator, Upper School
Phone: (440) 423-2955
Email: halle.shane@hawken.edu
Phone: (440) 423-2955
Email: halle.shane@hawken.edu
Halle joined the Hawken community in 2024. Originally from Solon, she obtained a B.A. from Lehigh University and then an M.Ed. from Fordham University. Halle lived in New York City for 9 years where she worked as a guidance counselor in an elementary school. She was drawn to Hawken's forward-focused approach to preparing students for a successful future and the school's commitment to developing fine character. She likes to travel and explore new cultures, cuisines, and cities.
The Mastery School of Hawken, Grades 9-12, University Circle Campus
Sarah Kozlowski
Director of Admission, The Mastery School of Hawken
Phone: (440) 423-8801, Ext. 646
Email: sarah.kozlowski@hawken.edu
Sarah Kozlowski joined the Hawken community in 2015 as the Lower School performing arts teacher and transitioned to the Mastery School of Hawken in 2021. As an educator with more than a decade of teaching experience, Sarah is passionate about helping students of all ages kindle the spark of curiosity. Hawken’s commitment to character development and real-world learning are of utmost importance to Sarah as Hawken prepares young people to take on the challenges of our world. Sarah earned a Master of Music Education in 2018 and when not at Hawken, she enjoys sailing, cooking, and spending time with her husband and daughters.
Phone: (440) 423-8801, Ext. 646
Email: sarah.kozlowski@hawken.edu
Sarah Kozlowski joined the Hawken community in 2015 as the Lower School performing arts teacher and transitioned to the Mastery School of Hawken in 2021. As an educator with more than a decade of teaching experience, Sarah is passionate about helping students of all ages kindle the spark of curiosity. Hawken’s commitment to character development and real-world learning are of utmost importance to Sarah as Hawken prepares young people to take on the challenges of our world. Sarah earned a Master of Music Education in 2018 and when not at Hawken, she enjoys sailing, cooking, and spending time with her husband and daughters.
Max Schubert
Director of External Relations, The Mastery School of Hawken
Phone: (440) 423-8801, Ext. 609
Email: max.schubert@hawken.edu
Phone: (440) 423-8801, Ext. 609
Email: max.schubert@hawken.edu
Max joined the Hawken community in 2021. He brings with him experience in educational psychology and alternative education models, specifically Montessori education. Max was drawn to Hawken’s commitment to creating individualized learning opportunities that are rooted in a pedagogy of place. A Cleveland native, he spends his free time gardening, writing and or finding adventures in the great outdoors.
Dan Usaj
Associate Director of Sports and Fitness and Admission Counselor, The Mastery School of Hawken
Phone: (440) 423-8801, Ext. 698
Email: dusaj@hawken.edu
Phone: (440) 423-8801, Ext. 698
Email: dusaj@hawken.edu
Dan Usaj joined the Hawken community in 2018 as Associate Athletic Director and Program Director of Boys Lacrosse then transitioned to the Mastery School of Hawken in 2022. Prior to Hawken he was the Associate Boarding School Director of Admissions at Shady Side Academy (PA). Dan resides in Lyndhurst with his wife, Jelena, and his two children, Luka and Nora. He is an avid movie enthusiast, loves to cook and runs his North East Ohio Lacrosse company (NEOLAX) in his down time.
Dan earned his BA in Speech and Theater from St. Lawrence University, while playing and captaining the men's lacrosse team. He received a MS in Interscholastic Athletic Administration from Ohio University.
Early Childhood, Lower & Middle Schools, Toddler - Grade 8, Lyndhurst Campus
Dave Hilborn
Director of Admission, Early Childhood, Lower & Middle Schools
Phone: (440) 423-2027
Email: dave.hilborn@hawken.edu
Dave Hilborn joined the Hawken community in 2019 after 10 years in admissions and enrollment at Notre Dame College. During his time there he had numerous roles but most recently was the Associate Dean of Enrollment. Dave was part of an admissions office that brought in the largest freshmen class in the school’s 90-year history. He was also a student at Notre Dame College where he was part of the inaugural class of males in 2001. Prior to that NDC was an all-women’s college. Dave also was part of the first men’s basketball team where he scored the first point in the history of the program. Dave was born, raised and still currently resides in Northeast Ohio with his wife, Kelly, and children Davey, Cal and Ginny. He enjoys running through mountains, attending concerts, rooting in all Cleveland sports and spending time with family.
Phone: (440) 423-2027
Email: dave.hilborn@hawken.edu
Dave Hilborn joined the Hawken community in 2019 after 10 years in admissions and enrollment at Notre Dame College. During his time there he had numerous roles but most recently was the Associate Dean of Enrollment. Dave was part of an admissions office that brought in the largest freshmen class in the school’s 90-year history. He was also a student at Notre Dame College where he was part of the inaugural class of males in 2001. Prior to that NDC was an all-women’s college. Dave also was part of the first men’s basketball team where he scored the first point in the history of the program. Dave was born, raised and still currently resides in Northeast Ohio with his wife, Kelly, and children Davey, Cal and Ginny. He enjoys running through mountains, attending concerts, rooting in all Cleveland sports and spending time with family.
Hayley Rivchun
Assistant Director of Admissions, Early Childhood, Lower & Middle Schools
Phone: (440) 423-2074
Email: hayley.rivchun@hawken.edu
Hayley Rivchun joined the Hawken community and admission team in December 2016 and served as the Admission Coordinator at the Upper School for six years. Before coming to Hawken she owned a local pizza franchise with her husband, and worked as a camp and children’s programming director at a community center in the Cleveland area. Hayley earned her M.Ed in School Counseling from John Carroll University in 2011. When not at Hawken, Hayley spends her time with her husband Ari and their two daughters, Charlie and River.
Phone: (440) 423-2074
Email: hayley.rivchun@hawken.edu
Hayley Rivchun joined the Hawken community and admission team in December 2016 and served as the Admission Coordinator at the Upper School for six years. Before coming to Hawken she owned a local pizza franchise with her husband, and worked as a camp and children’s programming director at a community center in the Cleveland area. Hayley earned her M.Ed in School Counseling from John Carroll University in 2011. When not at Hawken, Hayley spends her time with her husband Ari and their two daughters, Charlie and River.
Jane Anagnostos
Admission Coordinator, Early Childhood, Lower & Middle Schools
Phone: (440) 423-2950
Email: jane.anagnostos@hawken.edu
Phone: (440) 423-2950
Email: jane.anagnostos@hawken.edu
Jane Anagnostos joined the Hawken admission team in October 2019 from Notre Dame College where she worked in admissions for six years. She and her husband Peter are parents of two Hawken graduates, Emily 2011 and Kate 2013. While her children attended Hawken she enjoyed serving as treasurer of the Parents' Association and volunteering in the Lyndhurst library. As empty nesters, she and Peter enjoy exploring Cleveland and its neighborhoods and travelling. She is happy to be back at Hawken.
An independent, coeducational, college preparatory day school, toddler through grade 12
Early Childhood, Lower, and Middle Schools, 5000 Clubside Rd, Lyndhurst, OH 44124
Birchwood School of Hawken, 4400 West 140th Street, Cleveland, OH 44135
Upper School, PO Box 8002 (12465 County Line Rd), Gates Mills, OH 44040
Mastery School of Hawken, 11025 Magnolia Dr, Cleveland, OH 44106
Gries Center, 10823 Magnolia Dr, Cleveland, OH 44106
Early Childhood, Lower, and Middle Schools, 5000 Clubside Rd, Lyndhurst, OH 44124
Birchwood School of Hawken, 4400 West 140th Street, Cleveland, OH 44135
Upper School, PO Box 8002 (12465 County Line Rd), Gates Mills, OH 44040
Mastery School of Hawken, 11025 Magnolia Dr, Cleveland, OH 44106
Gries Center, 10823 Magnolia Dr, Cleveland, OH 44106
Directions | Log in | 440-423-4446