Meet Your Student Services Staff



Heydi Baptista
Social Worker

Heydi Baptista has served as a school social worker in APS since 2003 and has been at Washington-Liberty High School since 2008. She has worked with students at the elementary, middle school, and high school levels. Ms. Baptista earned a Bachelor of Science degree in Social Work at George Mason University and a Master’s degree in Social Work at Howard University. Ms. Baptista is fluent in English and Spanish.

Maria Luisa Ceballos

Substance Abuse Counselor


Maria Luisa Ceballos is a Licensed Professional Counselor and a Certified Substance Abuse Counselor. She received her Bachelor of Arts degree in Psychology from the Sacred Heart University in Lima-Peru. Additionally, she received her Master’s degree in Community Counseling from Trinity University in 1998 and completed a Post Master’s Program at George Mason University in 2007. Prior to joining Washington-Liberty as the School Substance Abuse Counselor, Ms. Ceballos worked as a Child and Family Therapist at the Arlington Department of Human Services where she provided mental health and substance abuse treatment services for thirteen years. Ms. Ceballos is fluent in English and Spanish.


Tamika George
Attendance Specialist

Bio Coming Soon


Lori Ockerman
School Psychologist

Lori Ockerman joined the W-L staff in 2016, but has worked at various schools around the county as a psychologist since 1997.  She earned her BA from Morehead State University and her MA from George Mason University.  Prior to coming to Arlington, Ms. Ockerman served as an adjunct faculty member for  the University of Maryland in their European Division, and taught at the middle school level.  She enjoys travel, theater, concerts and cooking.


Brittnee Stephens

School Social Worker


Brittnee Stephens received a Bachelor’s Degree in Child Development and Family Relations at East Carolina University and a Master’s degree in Social Work at West Virginia University. Prior to coming to APS, Brittnee worked as a Medical Social Worker at Inova Fairfax Hospital. In her spare time, she likes to work out, eat and read books.

Ricia Weiner

Dr. Ricia Weiner

School Psychologist

One of her greatest rewards in life is watching a child grow and develop independence and confidence in their own skills. Her greatest passion is supporting families during their child’s dynamic and exciting educational and developmental journey. To this endeavor, she bring a breadth and depth of experience and expertise cultivated during her own educational, professional, and parenting journey. She holds a BSE in secondary education from the University of Arizona and PhD in school psychology from the University of Maryland, College Park. Her school psychology acumen has been sharpened over time by serving students and families professionally since 2001 in Arlington Public School, Cleveland Metropolitan School District, Magnificat High School in Rocky River, OH, Washington International School, and Whittle School & Studios before returning back to her professional home in APS.