The trainers at Threshold are mothers and professionals who bring into their work over 25 years of experience raising children and working in the community with a diverse population which includes parents, educators and child care providers. They have facilitated hundreds of parenting classes, workshops and trainings and coaching sessions in English and Spanish.

Dr. Chantal Dubuisson-Myllymaki

Dr. Chantal Dubuisson-Myllymaki is the co-founder of Threshold.  Dr. Dubuisson-Myllymaki has both a Bachelor of Arts and Master of Arts degrees in Clinical Psychology, and a Doctorate Degree in Higher and Post-Secondary Education from Argosy University with a dissertation focused on raising awareness to the co-parenting issues of single African American Fathers entitled: Co-Parenting Issues Faced by Single African American Fathers and the Pursuit of their Educational Goals, (Publication on ProQuest 13853652.). She has certifications as a National Fatherhood Practitioner, and as a facilitator for the evidence-based Abriendo Puertas/Opening Door program.   Dr. Dubuisson-Myllymaki has served the Bayview Hunters Point and Alameda County communities for more than 25 years as a School-Based Mental Health Counselor, Parent Education Instructor, Parent Coach, Parent Support Counselor Supervisor on a parenting crisis hotline, Respite Child Care Coordinator, Volunteer Coordinator and as a Pre-Service Trainer for volunteers and Master’s level interns.

Debora Roca

Debora Roca is the co-founder of Threshold.  Ms. Roca is a CTI Professionally Trained Coach, a bilingual certified Abriendo Puertas/Opening Doors (2^nd and 3^rd editions) Facilitator, and a Certified Circle of Security Parent Educator. In her native Peru, she received a Bachelor’s Degree in Psychology and worked with infants offering Early Stimulation sessions. For the last 24 years, as a Parent Education Instructor, Trainer and Coach, she has been educating and offering support to parents, kinship providers, child-care providers and other caregivers affected by divorce/separation, abuse, community probation, immigration, as well as everyday common stressors. She has offered a variety of parenting and mental health workshops in the community, adult schools and during child-care provider support groups. Ms. Roca has also offered support services for parents in the welfare system, recruited and trained volunteers for a parent support hotline and has trained and certified over 40 facilitators on the Abriendo Puertas/Opening Doors parenting program.