Worthy Communities
About Tamara

A life spent on what’s worth it.

Tamara Sheesley Balis is an educator, school leader and speaker who has spent more than thirty years exploring what becomes possible when organizations honor the inherent worth of every person while holding high expectations for excellent work. Her work brings together the lessons of leading schools, developing educators and doing the difficult inner work of leadership. Today she is bringing those lessons to a wider audience through Worthy Communities, The WORTHY Practice, and her work with educators and leaders in schools and mission-driven organizations.

Tamara Sheesley Balis, smiling, chin resting on her hand
30+ years
in education
20+ years
leading Montessori schools
10 years
average teacher tenure at Greenspring
130,000+
Voices in Montessori downloads
School leader

Twenty years building schools where people want to stay.

Tamara has led three Montessori schools: The Boyd School in Reston, Virginia; Amherst Montessori School in Amherst, Massachusetts; and, since 2012, Greenspring Montessori School in Baltimore, Maryland. She grew enrollment significantly at every one, led major campus expansion and renovation projects, and built a culture where the average teacher has stayed ten years.

Tamara breaking ground on Phase 2 of Greenspring Montessori’s capital project
As Head of School

Growing schools

  • Led three Montessori schools over more than 20 years: The Boyd School (2002–2005), Amherst Montessori School (2008–2012) and Greenspring Montessori School (2012–present)
  • Grew enrollment significantly at every school
  • Designed a Spanish and English dual-language program serving 92 children
  • Started outdoor education programming and brought Model UN to Greenspring students

Building and fundraising

  • Inspired more than $2 million in giving, in communities with little history of giving
  • Led a $1.2 million capital campaign that renovated and expanded 15 classrooms
  • Increased Annual Fund giving by 77%
  • Led more than 40,000 square feet of renovation and new construction across her schools

Investing in people

  • Built a staff culture with an average teacher tenure of 10 years
  • Sponsored 21 educators through Montessori teacher training
  • Created a four-day work week pilot for preschool teachers
  • Piloted a teacher mentoring program in which no teachers reported high end-of-year burnout, in a study by the University of Wisconsin

Beyond her own school

  • Founded the Baltimore Montessori Conference, which drew educators from 7 states
  • Led the founding of the Greenspring Center for Lifelong Learning in 2022, supporting educators far beyond Greenspring
Tamara speaking with a microphone to an audience
Speaker and mentor

Inspiring on Friday. Put to work on Monday.

Tamara speaks and leads workshops for educators, school leaders and mission-driven organizations on belonging, shared leadership, hard conversations and the human side of excellent work. Every session is grounded in real leadership experience, with practical tools people can use the very next day.

Sharing what we’ve learned

Better together.

Tamara believes that what she and her colleagues have learned belongs to everyone who cares for children and the adults around them. So she keeps sharing it.

  • Greenspring Center for Lifelong Learning. In 2022, Tamara led its founding. Its Mentoring Communities and professional learning support teachers and school leaders far beyond Greenspring.
  • Voices in Montessori podcast. Conversations with educators, researchers and leaders about the adults who shape children’s lives, with more than 130,000 downloads.
  • Workshops and conferences. Culture of Belonging workshops since 2018, and the Baltimore Montessori Conference she founded, which drew educators from 7 states.
  • Writing. Articles on child development for Washington Families magazine, the parenting film Bringing Out the Brilliance in Your Infant: Montessori at Home, and articles on LinkedIn.
Listen to Voices in Montessori →
Tamara recording an episode of the Voices in Montessori podcast
Her story

How Tamara came to this work.

Age 11

The rainbow school

When Tamara was eight, her parents packed the family into their Volvo and drove from Colorado to Guatemala to take Spanish language lessons. Her childhood became a series of new adventures, taking her family through Guatemala, Puerto Rico, Maryland, Haiti, Costa Rica, and Mexico. She was so often the new kid, learning firsthand what it felt like to be left out—and how much it mattered when someone made room for her.

Around age eleven, she decided that one day she would have a “rainbow school,” a place where every child felt included, respected, and valued. Her experiences, especially in Puerto Rico, had shown her how much children need adults who notice when something is wrong and know how to help. Long before she had language for the work she would eventually do, she had a vision of what she wanted to create.

1994

There had to be a better way

After studying English and Women’s Studies at Principia College, Tamara joined Teach For America’s charter corps in Phoenix and began teaching in a bilingual elementary school classroom. She arrived with conviction and enthusiasm, but her preparation offered only a beginning. Once in the classroom, she was rarely observed and often felt overwhelmed and underprepared, sometimes falling asleep on the classroom floor after the last student left for the day. She nearly left the profession.

Over four years in public school classrooms in Phoenix, San Francisco, and Houston, she kept returning to the distance between what she wanted for children and what she knew how to create. She was searching for an education that honored the child’s spirit, and for the guidance and support that would help teachers make that possible in everyday classroom life. That search led her to try building something herself.

1998–99

A school in a barn

In a backyard barn in Texas, Tamara and Nicole MacKenzie, a trainer with MacKenzie Productions, started a small school called The Nue Nue School. It was an opportunity to explore what education could look like when they began with honoring the spirit of the children in front of them.

That school year, Tamara observed in a Montessori school. Here, independence, responsibility, community, and grace and courtesy were deliberately taught and practiced. She was awestruck as she found an approach that gave form to much of what she had been seeking.

As she continued teaching and moved into leadership, another question grew: What would it take to bring that same intention to the experience of adults—the teachers, staff, and leaders whose daily lives shaped the school? That question would become central to her life’s work.

Mom

Her heart walking outside her body

Tamara’s two daughters walking arm in arm down a wooded path
The girls…

Then, after many years of trying, Tamara became a mother. Despite her teaching experience, knowledge of child development, and Montessori training, she was spectacularly unprepared for how much she still had to learn. She had somehow imagined that her years as a teacher would translate into exceptional parenting and, naturally, miraculously perfect children. That illusion didn’t last long.

Motherhood became her most humbling and transformative education. Watching herself parent brought her own childhood into sharper focus: the patterns she had inherited, the reactions that surfaced automatically, and the enormous distance between knowing how she wanted to respond and actually doing it. Loving her children deeply did not automatically make her the parent she wanted to be. She had to keep learning, questioning herself, apologizing, and trying again. She turned that learning into something for other families, writing, narrating, and producing Bringing Out the Brilliance in Your Infant: Montessori at Home to bridge what she knew as a Montessori teacher and what she needed as a parent.

Her two children are strong, fierce, intelligent, funny, opinionated, and entirely their own people. They have challenged her, delighted her, and taught her more about love, humility, and herself than any classroom could. She describes them as her heart walking around outside her body.

2016

Ten anonymous letters

A stack of letters on a wooden table in afternoon light
The hardest lessons often hold the most gold.

A few years into Tamara’s headship at Greenspring, the Board Chair called her on a Sunday morning. Ten staff members had written anonymous letters about their experience of the school. The message underneath them was clear: they did not feel seen or valued.

By the measures she was watching, the school was getting healthier. Enrollment, annual fund giving, and teacher salaries were all growing. But the school wasn’t meeting the needs of its staff. The letters revealed what those measures had missed. Tamara wanted to quit. Instead, she put on her big kid pants and stayed, trusting that the hardest lessons often hold the most gold. Staying meant changing how she led. Her commitment to the people at Greenspring needed to be evident in their daily experience of her leadership.

Within a few years, staff members were calling Greenspring the best place they had ever worked. Tamara remains deeply grateful for the lesson.

2018

A culture of belonging

Tamara leading a workshop for a large room at the American Montessori Society National Conference
Leading a training on Building a Culture of Belonging at the American Montessori Society National Conference.

The years after those letters involved study, experimentation, and sustained work with her team. They created new systems and teams, participated in training, read widely, and revised what wasn’t working. As the adults’ experience changed, the effects reached across the school community.

In 2018, Tamara began sharing what they had learned through Culture of Belonging, communication, and community-focused workshops, giving other educators and leaders practical ways to examine and strengthen their own workplace cultures.

2022

Beyond Greenspring’s walls

The questions Tamara and her colleagues had been working through at Greenspring resonated with educators elsewhere. Teachers and school leaders were looking for meaningful professional learning, connection with colleagues, and support for the human demands of their work.

In 2022, Tamara led the founding of the Greenspring Center for Lifelong Learning. Through Mentoring Communities, professional learning, and the Voices in Montessori podcast, that work began reaching educators far beyond Greenspring.

Lifelong learning

Growth has shaped her life.

Tamara asks the leaders she works with to keep learning and holds herself to the same expectation. Her own education continues through formal study, reflection, and the daily practice of discovering what she still has to learn.

MEd
Educational Leadership
The Institute for Educational Studies, in partnership with Lasell University. Earned at 53, with a focus on spirituality and leadership in nonreligious schools.
AMS credentialed
Montessori Primary Teacher
American Montessori Society credential for teaching children ages 3 to 6.
AMS credentialed
Montessori Lower Elementary Teacher
American Montessori Society credential for teaching children ages 6 to 9.
Luma Practitioner
Human-centered design
Certified in methods for tackling problems and designing solutions.

Worth is inherent.
Capability is built.

Tamara and her daughter Sia taking a selfie inside a museum
Beyond the work

Home, mornings, travel and pickleball.

Tamara makes her home in Maryland with her family. Her mornings begin with journaling, meditation and prayer, grounding her in her own innate worth and the worth of others. She spends as much time outdoors as she can, loves to travel, and never turns down a great game of pickleball.

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