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Our Team

A remarkable school begins with a remarkable team.

Meet the educators, leaders, and specialists who bring GCS to life—and discover how training, mentorship, and GCS Certification protect the quality of every classroom.

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Global Children School educators working warmly with children
Cultural lens · Names and identityPronunciation is a form of care.Teachers practice each child’s name accurately and learn its story—a daily act that communicates identity, respect, and belonging.

The people behind the promise

Selected with care.
Supported to grow.

GCS teachers design learning, guide multilingual communication, represent culture responsibly, and observe children closely. GCS Certification develops the judgment this work requires.

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GCS founder Tatyana Martelli with her family

A message from our founder

“The future belongs to the question-askers.”

Children need more than academic readiness. They need confidence to communicate across cultures, think critically, solve unfamiliar problems, and care about the world they share.

GCS grew from the belief that early childhood is the right time to build these capacities. Languages, intentional play, STEM, arts, movement, and close relationships work together.

Families are essential partners. Together, we protect each child’s voice, well-being, and natural desire to learn.

Tatyana MartelliFounder and GCS Visionary

Our greatest strength

The quality of a school begins with the quality of its team.

GCS educators plan together, study children’s development, share observations, and strengthen one another’s practice. That collaboration creates consistency across classrooms and campuses.

A GCS teacher reading with a group of toddlers
Language grows through close attention, expressive storytelling, and shared delight.
A GCS teacher surrounded by her toddler class
Teachers turn everyday classroom moments into belonging, confidence, and discovery.
01

Founders & Educational Leadership

Tatyana Martelli · Founder and GCS Visionary
David Martelli · Technology and STEM Director

02

Campus & Curriculum Leadership

Education coordinators and program directors guide curriculum, coach teachers, support families, and keep one high standard across Woburn, Cambridge, and Natick.

03

Classroom Educators

Infant, toddler, preschool, Pre-K, and kindergarten teachers build the close relationships and thoughtful environments that make learning possible.

04

Specialist Teachers

Dedicated educators deepen STEM, music, movement, gym, languages, and the arts with expertise and continuity.

The GCS Certification pathway

Qualification is the beginning.
Certification is earned.

Every candidate must hold the appropriate EEC qualifications and pass our selective hiring process. GCS Certification then develops the knowledge, judgment, and shared practice needed to teach our Early Global Education model with excellence.

  1. 01

    Selective onboarding

    Classroom shadowing, health and safety training, observation, and a gradual transition into responsibility.

  2. 02

    Mentorship in practice

    Experienced educators provide structured guidance, feedback, modeling, and encouragement.

  3. 03

    Monthly professional development

    Training meets and exceeds EEC requirements, including curriculum, child development, classroom practice, multilingual education, and our philosophy.

  4. 04

    Demonstrated excellence

    Certification is awarded after teachers consistently create meaningful environments, guide children with empathy, collaborate across disciplines, and contribute to the team.

Team awards & recognition

Excellence deserves to be seen.

This section is ready to feature verified school awards, professional honors, educator milestones, and individual team recognition. We will add recipient names, award titles, years, and photographs once you provide the official list.

Teaching excellenceExceptional classroom practice and meaningful child outcomesGrowth & leadershipContinued learning, mentorship, and contribution to colleaguesInnovationOriginal curriculum, problem-solving, and future-focused teachingCommunityExtraordinary partnership with children, families, and the wider school

See GCS in motion

A school is easier to understand when you can hear it, see it, and feel its energy.

Step inside our multilingual classrooms and meet the learning experiences our educators create every day.

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One journey, five stages

Programs that grow with your child.

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01

Infants

3–15 months

→02

Toddlers

15 months–2.9 years

→03

Preschool

2.9–4 years

→04

Pre-K

4–5 years

→05

Kindergarten

5–6 years

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Meet the educators

A remarkable team.
A shared standard.

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