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About us

We exist to expand the knowledge and practice of ABA around the world.

Beyou Global Institute was born from a decision: to contribute to the science that changed our lives by training new ABA professionals. We start with Brazil.

All classes are in Portuguese.

The Beyou team together at the ABAI convention
Beyou team at the ABAI convention
  • I.

    Evidence

    Everything we teach starts from the science of behavior and international standards.

  • II.

    Practice

    Real cases, role-play and feedback, because ABA is learned by doing.

  • III.

    Learning

    Courses designed with andragogy, the science of how adults learn.

Mariana and Eston Greub with their two children
Mariana and Eston Greub, founders of Beyou Group, with their children

Our origin

A family story gave rise to a global mission.

Mariana and Eston Greub founded Beyou Group in California after experiencing at home what humanized ABA does for a family. The group grew in clinical care, family education and research.

Over time, it became clear that serving well was not enough. For more families to have access to quality ABA, the world needed more well-trained professionals. The Beyou team had to contribute to the field by training the people who will care for the next families.

“We knew more people in the world should have access to the wonders of ABA.”
Mariana Bolzani Greub · President of Beyou Group

Why start with Brazil

The same need as the United States, with far fewer certified professionals.

The number of people who need treatment in Brazil is similar to that of the United States. The number of professionals with international ABA certification is much smaller. That gap is where the Institute works.

Sabrina Jesus
“In operations, we feel this every day: the opportunities exist. What is missing are qualified professionals ready for them.”
Sabrina Jesus · COO and co-founder

The co-founders

An idea that became a mission when three people joined forces.

Mariana shared the idea with Jackson and Sabrina: the Beyou team needed to train new ABA professionals, starting with Brazil. Sabrina brought operations experience. Jackson brought education and technology. Together, they stood by Mariana to get the Institute off the ground.

Jackson and Mariana have known each other since 2012, when they studied together in the United States. Sabrina has been with Mariana since the start of Beyou Behavior Therapy.

Jackson Fernandes, Mariana Bolzani Greub and Sabrina Jesus
Jackson, Mariana and Sabrina at the ABAI convention
  • Mariana Bolzani Greub

    President of Beyou Group

    Mariana Bolzani Greub

    Mission and science

    Behavior analyst, member of the IBAO advisory board and creator of the BCEM™ and CLERA™ models. Brazilian, lives in California, where she founded Beyou Group with Eston Greub. Leads the academic vision and the bridge to the IBAO.

  • Jackson Fernandes

    CEO · Co-founder

    Jackson Fernandes

    Strategy and operations

    More than 15 years in education. For 8 years he was CTO of one of the largest edtechs in Brazil, where he led the development of educational products used by more than 5 million higher education students in Brazil and Latin America. As CEO, he leads the strategy and the entire operation of the Institute, with a focus on the student experience.

  • Sabrina Jesus

    COO · Co-founder

    Sabrina Jesus

    Operations & Relationships

    Specialist in OBM (organizational behavior management) and co-founder of Beyou Behavior Therapy. She built the group’s operations from the start, created the COM™ model and led innovation in remote services. At the Institute, she makes everything work, from Brazil to the United States.

  • Mission

    Expand the knowledge and practice of ABA around the world.

  • Vision

    To be the reference in international-standard ABA training in Brazil and in Portuguese- and Spanish-speaking countries.

  • Values

    Ethics · Evidence · Real practice · Human care · Cultural respect

Mariana Bolzani Greub

Innovation in ABA

Mother, co-founder and creator of BCEM™ and CLERA™.

From the heart of San Francisco, Mariana Bolzani Greub developed two models that put the family at the center of intervention. They have already been applied with more than 300 families in several countries.

“ABA clinicians are scarce, and caregivers can be part of the solution. We created BCEM™ to give clinicians tools that help families build skills, and CLERA™ to understand how training and coaching should be offered to each caregiver.”
Mariana Bolzani Greub · President of Beyou Group
  • BCEM™

    BCEM™

    Behavioral Caregiver Empowerment Model

    Builds caregivers’ ability to apply ABA in daily routines, under clinical supervision.

  • CLERA™

    CLERA™

    Caregiver Readiness Assessment

    Assesses each caregiver’s readiness to learn and teach, so the plan starts from where the family is.

Coming soon in Brazil

BCEM™ and CLERA™ certification for Brazilian clinicians.

Join the interest list
Dr. Michael Mueller speaking at the IBAO conference
Dr. Michael Mueller, BCBA-DIBAO President · Co-creator of the AFLS
IBAO

Why the IBAO

Official IBAO partner in Brazil.

The IBAO was born from a hard decision. When the BACB stopped supporting the certification of professionals outside the United States and Canada, Dr. Michael Mueller and Dr. Ajamu Nkosi, Ph.D., BCBA-D, IBA, decided to fight so that ABA standards would remain within reach of the rest of the world.

They understood that copying the educational architecture of the United States would leave many professionals out, because not every country has a master’s degree in ABA. That is why the path to the IBA® goes through high-standard ABA training, created by IBAO-approved providers, focused on practice, supervision and the exam.

“The IBAO showed that it is possible to welcome professionals and countries of every background without giving up quality and ethics. That is the standard we want to bring to Brazil.”
Mariana Bolzani Greub · President of Beyou Group
  • Authorized provider

    Programs aligned with the IBT® and IBA® certifications, in Portuguese.

  • Advisory board

    Mariana is a director of the IBAO professional advisory board.

  • IBAO Conference 2027

    The second annual IBAO conference takes place in Brazil, in October 2027.

The Beyou ecosystem

Part of a group that cares, researches and teaches.

Beyou Group was founded in California by Mariana and Eston Greub. Each company in the group has a role, and together they cover the full path: from caring for families to training professionals.

  • Care

    Beyou Behavior Therapy

    Caregiver-mediated ABA, in person and via telehealth.

  • Knowledge

    Beyou Foundation

    Research, access and support for families in communities with fewer resources.

  • Education · You are here

    Beyou Global Institute

    Training, certification and professional development in ABA.

  • Higher education · Being established

    IUBS

    International University of Behavioral Sciences.

Who walks with us

Clinical and educational leadership.

  • Eston Greub

    Executive director

    Eston Greub

    Strategy, institutional leadership, partnerships and organizational performance.

  • Michele Tozadore

    Director of Education and Programs

    Michele Tozadore, IBA

    Courses, curriculum, faculty, educational quality and international certifications.

  • Débora Leite

    Course Development Coordinator

    Débora Leite

    Instructional design, course production, teaching materials and content development.

  • Student Success Coordinator

    Andrisa Fraga

    Student onboarding, engagement, learning support and certification preparation.

  • 200+

    families served by the group

  • 9

    countries with our team

  • 70+

    professionals and consultants

  • 78+

    professionals around the world supporting the development of the educational material

Timeline

From one family to families around the world.

  1. 2019-2020

    Two diagnoses

    Mariana and Eston’s children are diagnosed with autism.

  2. 2021

    ABA changes everything

    The family experiences humanized ABA and sees what it can do.

  3. 2022-2023

    Beyou Group is born

    In California, so that every family has this access.

  4. 2024-2026

    Global reach

    Caregiver-mediated model in several countries, the Foundation, BCEM™ and the Global Institute.

  5. Oct · 2027

    IBAO in Brazil

    The second annual IBAO conference takes place in Brazil.

Be part of our story.

Whether to start in ABA, get certified or train your team, there is a path for you.