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What Research Suggests about Montessori

Two recent studies, explained for parents

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Is Montessori “working”? A research-backed answer for parents.

Parents often wonder whether Montessori is “working,” especially when their child’s progress can’t be measured with grades like it would be in a traditional school. Recent research suggests the benefits may simply take time to see.

In this session, we unpack two recent studies for your parents through interactive dashboards and data storytelling, in plain, parent-friendly terms. 

Data storytelling · Parent-facing

We turn research into data stories your parents can explore

Research papers aren’t written for parents. Our Montessori Data Lens team builds interactive dashboards and data stories from these two studies, then unpacks the insights for your families in plain language.

Interactive dashboards parents can explore
Data storytelling that connects findings to the classroom

The webinar covers two recent research studies

A Data Story of Public Montessori Preschool

The study

588 children applied to 24 public Montessori preschools. Seats were offered by lottery, so the two groups started out alike.

What they found

No differences at the end of PK3 or PK4. By the end of kindergarten, children offered a Montessori seat were ahead in reading, focus and self-control, memory, and understanding others.

Why it matters for families

The gains came mainly in the third year of the cycle, which is why staying through kindergarten, and the larger mixed-age classroom, matter.

A Data Story of Montessori Math

The study

97 children in a French public preschool were randomly placed in Montessori-inspired or conventional classrooms (ages 3–6), then followed to 5th grade.

What they found

By 5th grade, the Montessori group was better at solving math problems, but not faster at arithmetic. The advantage wasn’t visible in kindergarten.

Why it matters for families

Hands-on materials like the golden beads build conceptual understanding rather than quick answers, and that understanding shows up years later.

Explore the data stories

Dashboard: Impact of Public Montessori Preschool, showing effect sizes by study wave, demographics, kindergarten attendance and cost differences

A Data Story of Public Montessori Preschool

588 children at 24 public Montessori schools were offered seats by lottery. By the end of kindergarten, Montessori children were ahead in:

Reading
Focus and self-control
Memory
Understanding others

Interestingly, these gains showed up mainly in the third year of the classroom cycle, which helps explain why classrooms are larger and mixed-age.

Lillard, Loeb, Escueta, Manship, Hauser, Berg & Daggett

A Data Story of Montessori Math

A study from France followed children for five years, from preschool to 5th grade.

Better problem-solvers — children from a Montessori preschool were better at solving math problems in fifth grade.
Not visible in kindergarten — the advantage appeared later.
Understanding, not speed — the edge was in conceptual problem-solving, not arithmetic fluency.
Golden beads — why hands-on materials build deeper understanding, not just quick answers.
Le Diagon, Van der Henst & Prado
Dashboard: Montessori Math, showing fifth grade score differences, kindergarten score correlation, scope and sequence and materials

What parents will take away

Patience

The benefits may simply take time to see

Gains showed up by the end of kindergarten, and in math by 5th grade, not in the early years.

The full cycle

Why staying through the third year matters

Most of the gains appeared in the final year of the three-year classroom cycle.

Classroom design

Why classrooms are larger and mixed-age

How the Montessori classroom is set up on purpose, and what the research suggests about it.

Deep learning

Understanding over quick answers

Why hands-on materials like the golden beads build understanding that shows up years later.

Pricing

Want to bring research-backed insights to your parents?

Book the parent webinar, or host a parent survey to gain data-driven insights into your families’ experience.

Parent Webinar

What Research Suggests about Montessori

A live session for your families, presented by Isabella Cai.
$899 $1999 / session
What’s covered
Both studies explained in plain, parent-friendly terms
Interactive dashboards and a data story built for parents
The third year, mixed-age classrooms and hands-on materials
Schedule a webinar
Host a Parent Survey

Parent Survey Service

Learn what your own families think, with a school-level analysis.
$799
What’s included
15-minute scoping call
An advanced parent survey for your families
A tailored school-level analysis of the results
One-on-one findings consultation with the research team
Host a parent survey