HDC Staff



Aaron L. Horn, MA, Ed.D.

Chief Executive Officer

Dr. Aaron L. Horn was born and raised in San Francisco.  His twenty years of human service includes teaching, counseling and coaching.

His research afforded him the opportunity to publish three books dedicated to deepening human relationships, particularly those concerning young Black Males. Dr. Horn’s number one passion is altering the negative behaviors of human beings through his methodology of R.A.M. – Relationships, Accountability and Mentoring. Dr. Horn’s first book is titled “The Role of Father-Like Care in the Education of Young Black Males”. 

This qualitative study analyzes African American males’ perceptions of the tutor-tutee relationship within in-home, one-on-one tutoring. His second book is titled “I Got’Cho Back! Improving Relationships with Young Black Males.”I Got’cho Back provides an historical context for some of the most profound lifespan development issues that impact many young Black males in America.   Dr. Horn’s third book, “The Beauty of R.A.M. Deepening Human Connections through Relationships, Accountability, and Mentoring” is a step-by-step resource guide on how to effectively serve clients in underserved communities. Dr. Horn has received numerous awards and accolades, including “Community Advocate Award” from San Francisco State University and the “Edward J. Griffin Award” from the University of San Francisco. Dr. Horn is currently an Adjunct Professor at the University of San Francisco, Counseling Psychology Department and the Chief Executive Officer of Horn Development Consulting (HDC), a professional coaching organization located in San Francisco, California.  

Please view Dr. Aaron Horn’s CV .



Colette A. Reid-Horn, LCSW, PPSC

Chief Program Officer

Colette is a New York native from a strong Caribbean background with over twenty -three years of experience in higher education and mental health. She proudly exudes her cultural values and beliefs in the work that she does and how she connects with individuals. Colette believes in the Jamaican motto of her parent’s rich heritage, “Out of many, one people.” Colette began demonstrating her social work skills by assisting her mother as a young child when she participated in church activities. Colette continued to seek out various opportunities to assist others by volunteering for various causes in high school and college, undergraduate and graduate such as the Special Olympics and the AIDS walk. Colette’s journey continued where she received her education from Stony Brook University, the University of Vermont and Chapman University. She has her BA in English, MA in Liberal Studies and Counseling, and her Masters in Social Work.  Colette’s professional experience ranges from working in EOP, residential life, student activities, school based counseling, parenting education and community mental health. Colette attributes much of her success to the skills that she developed as an Office Assistant, Resident Assistant and Peer Educator when she was an undergraduate at Stony Brook University. Colette has also obtained her credential in school counseling and certified as a facilitator and trainer for Active Parenting NOW. Her strengths are within the realm of facilitation, training, mentoring and counseling. Colette is currently serving as the Chief Program Officer for Horn Development Consulting.  

Please view Colette A. Reid-Horn’s CV.


Estella R. Pabonan, MA

Administrative Director
Estella is a first-generation Filipina-American, born and raised in Daly City, CA. As a child of Filipino immigrants, Estella was instilled with a strong sense of “kapwa,” a Filipino cultural concept of interpersonal togetherness, directed towards the preservation and strengthening of human relationships. This sense of “kapwa” has inspired Estella during her 20 years of experience in community mental health and higher education. Estella has her BA in Clinical Psychology and MA in Counseling Psychology with an emphasis in Marriage and Family Therapy (MFT). Estella has worked as a social worker providing care for families of children with developmental disabilities in the East Bay. After graduate school, she was hired as a staff counselor at a San Mateo County community mental health center where she managed the out-patient adolescent alcohol and drug treatment program. Estella also was a member of the center’s school team and served as a K-12 school counselor at San Mateo County schools where she co-managed after-school programs for at-risk youth and facilitated peer groups on racial identity and on the acculturation of immigrant youth into American schools. In addition to her roles as a program coordinator and adjunct professor for the Counseling Psychology Department at the University of San Francisco, Estella is also serving as the Administrative Director for Horn Development Consulting.