The Benefits of Multi-age Grouping
November 7, 2022

One hallmark of a Montessori education is the use of multi-age classrooms. 

Infants and toddlers may be together or separate, with a toddler classroom serving children 18 months to three years. Primary classrooms are for children ages 3-6, with preschool and kindergarten-aged children together. The elementary years serve children ages 6-12; some schools separate into lower (6-9) and upper (9-12) elementary, while many split elementary into two groups. Even Montessori middle- and high-school students learn in multi-age classrooms.


While Montessori is not the only type of education that utilizes this approach, it’s not what most people are used to. What are the benefits of structuring a classroom this way? Read on to learn more...


Learning at an Individual Pace


Children in multi-age classrooms tend to have a little more flexibility when it comes to mastering skills within a specific timeframe. We know that learning is not linear, and that learners have periods of significant growth, plateaus, and even the occasional regression. In multi-age classrooms, children are typically able to work at their own pace without the added pressure of keeping up with the whole group, or even being held back by the whole group. 


When children in a classroom range in ages, everyone has someone they can work with, regardless of their skill level. Children don’t feel left behind if they struggle with a concept, and they also don’t feel bored by repetition of something they have already mastered. Teachers who teach in multi-age classrooms typically have deep knowledge for a range of developmental abilities, leaving them well-equipped to differentiate instruction for each individual child.


Building Stronger Relationships


Traditionally children move from one class to the next each year. This means not only a new set of academic expectations, different routines, and different classroom structures, but a different teacher. 


In multi-age classrooms teachers have a longer period of time to get to know a student and their family, and vice versa. When teachers really get to know a student, they are able to tailor instruction in regards to both content and delivery. They know how to hook a specific child onto a topic or into a lesson. They know what kind of environment a child needs to feel successful.


Parents have an opportunity to get to know teachers better this way, too. If your child has the same teacher for two or three years, the lines of communication are strengthened. Parents get to know the teacher’s style and expectations. The home to school connection becomes more seamless, and the biggest beneficiary is the child.


Mentors and Leaders


When a child spends multiple years in the same class they are afforded two very special opportunities. 


Children who are new to the class are fortunate enough to be surrounded by helpful peer mentors. Children often learn best from one another, and they seek to do so naturally. First and second year students watch as the older children enjoy advanced, challenging work, and this inspires them. They look to the older children for guidance, and the older children are happy to provide it. 


After a year or two in the same room, students have a chance to practice leadership skills. In Montessori classrooms, the older children are often seen giving lessons, helping to clean up spills, or reaching out a comforting hand to their younger friends.


The best part is kids make the transition from observer to leader in their own time. It doesn’t happen for all children at the same time, but when it does it’s pretty magical to observe. 


Mirroring Real-Life


There is no other area in life in which people are split into groups with others who are exactly their chronological age. Whether in the family, the workforce or elsewhere, people ultimately need to coexist with people older and younger than themselves. Doing so makes for a more enriching environment, replete with a variety of ideas and skills. 


Why not start the experience with young children in school?


Moving On


While staying in the same class for multiple school years has many benefits, a child will eventually transition into a new class. While this can feel bittersweet (for everyone involved!) children are typically ready when it is time.


The Montessori approach is always considering what is most supportive of children depending on their development. When formulating how to divide children into groupings, Maria Montessori relied on her ideas about the Planes of Development. There are very distinctive growth milestones children tend to reach at about age 3, another set around age 6, and yet another at age 12. The groupings in our schools are intentional, and they give kids a chance to feel comfortable in their community, while also preparing them to soar forward when the time is right.

By Katrina Cisne July 15, 2026
This year, I had the amazing opportunity to attend the 30th International Montessori Congress held in Merida, Yucatán. This event, happening every few years, is an opportunity for Montessorians throughout the world to come together to reflect and discuss the important work of educating the whole child. This year’s theme was, Joyful Journey, “a global celebration of growth, learning, and connection inspired by Montessori education.” Over the course of four days, we listened to Montessori trainers, psychologists, and other experts in the field of human development as they shared with us their research, observations and knowledge. Among the featured speakers were Dr. Adele Diamond, a leader in developmental cognitive neuroscience; Dr. Angeline Stoll Lillard, author of Montessori: The Science Behind the Genius and director of the early development Laboratory and the Montessori Science Program at the University of Virginia; and keynote speaker, Dr. Gabor Mate whose work focuses on addiction, trauma, childhood development, and the relationship of stress and illness. The Congress opened with Dr. Maté's keynote address on the needs of the child and what he described as the "biology of loss." He spoke about the essential developmental needs of every child: secure attachment, emotionally attuned relationships, the freedom to experience emotions—including grief, sadness, fear, and joy—opportunities for unstructured play in nature, and the presence of calm, consistently available caregivers. Rather than focusing only on overt trauma, Dr. Maté explored what happens when even one of these fundamental needs is not fully met. He explained how chronic stress or emotional misattunement can influence a child's developing brain, affecting both physical health and behavior. His message challenged us to reconsider the purpose of education. If our goal is to help children become self-regulated, compassionate, and independent thinkers, then our work must extend beyond academics. How do we, as educators and parents, support that development? Dr. Maté's answer was both profound and beautifully simple: we build relationships. He argued that the single greatest influence on a child's brain development is the quality of the relationship between the child and their caregiver. The message of relationship was echoed throughout the conference and across multiple speakers. Strong, supportive relationships foster resilience, help children understand and regulate their emotions, encourage healthy vulnerability, and cultivate trust. While I came away with countless new ideas and insights, this was the lesson that resonated with me most deeply as both a teacher and a parent. On the surface, we all recognize the importance of connecting with children. But when we pause to consider the profound influence we have, not only on their daily experiences but on the architecture of their developing brains and the people they are becoming, we are reminded that our greatest work is not simply teaching lessons. It is building authentic relationships, being fully present, and offering each child the unconditional respect, care, and love they need to flourish. The Congress served as a powerful reminder that Montessori education is not simply a method of teaching; it is a way of honoring the humanity of every child. As I return to the classroom, I do so with renewed purpose and gratitude, committed to nurturing not only my students' minds but also their hearts, knowing that the relationships we cultivate today will shape the adults they become tomorrow. Katrina Cisne Early Childhood Program Director
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