About Advanced ABA


Advanced ABA was founded in 2012 to provide high quality services to children and their families. We provide research-based practices based on the principles of Applied Behavior Analysis (ABA) and years of clinical experience. We believe in the highest standards and we strive to provide responsive, competent, and quality services.

Our Team

  • April Ringer, M.A., BCBA

    Founder/Chief Executive Officer

    April began working with children and teens in 2001. She started her career in Applied Behavior Analysis (ABA) in 2008, where she worked as a behavior technician providing therapy for children while attending California State University, Sacramento. April gained experience working with children with special needs, ranging from ages 15 months to 20 years old. April received a Bachelor of Arts Degree in Psychology in 2009 and continued to work in the field of ABA within a variety of environments including home, school, and community settings. April received a Master of Arts Degree in Teaching with a specialization in ABA from National University in 2012 and became a Board Certified Behavior Analyst (BCBA) later that year.

    April established Advanced ABA, Inc. in 2012 with the mission to provide quality services to families using the principles of ABA. She ensures the delivery of qualitative services by individualizing the methodology to each child, as well as focusing on providing effective Parent Training for long-term success. She enjoys training others in ABA, creating and maintaining a positive team-work environment, and utilizing ABA techniques in all areas of her life, including with her 2 young daughters.

  • Bailey Bakken, M.S., BCBA

    Clinical Director

    Bailey started working with kids with ASD in 2012. She received her Bachelor's Degree in Child and Adolescent Development from San Jose State University in 2017. Bailey is currently working on her Master's Degree in Psychology: Applied Behavior Analysis from Purdue Global University.

    Bailey started working at Advanced ABA in November of 2016. Her responsibilities include reviewing lesson plans, providing support to Behavior Technicians in the field, and working on parent goals during sessions and meetings. She proactively collaborates with the Clinical Director to assure that each client's needs are being met.

    She enjoys ABA because it is a process that is highly individualized for each client to promote growth in those with ASD. ABA is also fun! It can involve play and socialization while introducing real-world situations. She’s excited to meet all her families and can’t wait to get started!

  • Kayla Wallace, M.S., BCBA

    Behavior Consultant

    Kayla received her bachelor's in psychology from San Diego State University in 2015 and is now pursuing a master's degree in psychology from Capella University. Kayla has been working with children for over ten years, starting as a babysitter and then as a child watch attendant at the YMCA before becoming a registered behavior technician. Kayla has been in the field of Applied Behavior Analysis for 3 years as a Registered Behavior Technician and is now a Behavior Consultant. Kayla is most interested in helping kids on the spectrum with their social and functional communication skills.

    When she is not working, you can find Kayla watching sports like football and hockey. Kayla also enjoys playing sports, hiking, watching TV, and hanging out with her husband and dog.

  • Jennifer Kolp, M.Ed., BCBA

    Behavior Consultant

    Jennifer has been working with kids since 2011. She started as a swim instructor where she varied between teaching children basic survival skills to mastering each stroke before joining a swim team. In 2015, Jennifer had her first experience volunteering with a child with ASD and through that encounter, she decided to seek a career involving children on the spectrum.

    Jennifer got her Bachelor of Science degree in Human Development from UC Davis in 2017. Then, she continued her education and received her Masters in Education at Arizona State in Curriculum and Instruction (Applied Behavior Analysis) in 2019. Jennifer is now working towards taking her BCBA exam in 2020.

    Jennifer’s first experience in the field of Applied Behavior Analysis started at Advanced ABA in September of 2017 as a Registered Behavior Technician. In 2019, she became a Senior Behavior Technician and Social Group Lead where she works with new Behavior Technicians and prepares for social group at the clinic. Jennifer loves seeing the effectiveness and positive change that ABA has provided for clients and families.

    Outside of work, Jennifer enjoys playing sports, checking out new restaurants, and watching The Office endlessly at home.

  • Leanne Navarro, M.S., RBT

    Behavior Consultant

    Leanne received her bachelor’s in Recreational Therapy from San Jose State University in 2018. She had always seen herself working with children and decided to take a step into the Applied Behavior Analysis field in 2018. Since then, she has loved working in the field and enjoys every aspect of working with individuals with autism. After a few months of working at Advanced ABA, Leanne decided to pursue higher education in the ABA field. She is currently working on her master’s degree from Capella University to become a BCBA.

    Leanne enjoys working at Advanced ABA as a Senior BT and as a Social Skills Group Lead. The best part about her role at Advanced ABA is being able to provide support to other Behavior Technicians, educating and training parents, and leading a group in a clinic-based setting.

    When she is not working, you can find her studying or spending time with friends and family. She also enjoys traveling, watching Netflix, and being outdoors.

  • Charlene Estolas, M.S., RBT

    Behavior Consultant

    Charlene received her Bachelor of Science degree in Kinesiology from San Jose State University in 2016. During her post-undergraduate, Charlene began working with children as a recreation instructor teaching tumbling and gymnastics, then transitioned to working with children with ASD as an inclusive dance/movement instructor at a non-profit organization in the Bay Area.

    Charlene started working at Advanced ABA as a Behavior Technician in 2019 and a year later, became a Senior Behavior Technician. She also helped with leading the Social Skills Group. The experiences and opportunities she’s had at Advanced ABA helped play a role in furthering her career in ABA, in hopes to become a BCBA. Charlene received her Master of Science degree in Psychology from Capella University in 2021.

    Charlene enjoys teaching play, social, and functional communication skills and finds joy in watching how much a child can achieve through ABA. In her spare time, she likes watching TV/movies and spending time with friends and family.

  • Dang Trinh, M.A., RBT

    SSG Lead/SBT
  • Daisy Reynoso


    Daisy comes from a big family with a lot of cousins and being one of the older cousins, she has always been around kids. In her senior year of High School, Daisy was an aide for the daycare on site. She loves helping people out in any form that she can. That passion took her to school to become a certified nurse assistant.

    Daisy made a career change after six years and landed a job working with little ones in an ABA program as a BT and then as an Early Interventionist. She has also worked in daycare settings and a middle school. She has been working with Advanced ABA since 2018 and the staff is so helpful. Working with kids in general has been one of the most rewarding jobs she has had and she learns something everyday from the kids and that's a beautiful gift. Daisy loves to see the progress her kids make after time. Now that she has a son of her own, she loves to apply ABA on him. Daisy has the opportunity to lead SSG, and her favorite part has to be arts and crafts. Each child will add their own personality into their craft and it's amazing to see how they think out of the box.

    In her spare time, she loves to spend time with her husband and son; they go to the park or watch football on Sundays.

Our Mission

Advanced ABA is committed to helping children and teens have a successful learning experience and reach their full potential by providing quality services using the principles of Applied Behavior Analysis.