Researchers from three major US universities tracked 588 children across 24 public Montessori preschools to compare learning outcomes with children in traditional preschool programs. Children were randomly assigned to either Montessori or non-Montessori programs, making this the first rigorous nationwide trial of public Montessori education published in the Proceedings of the National Academy of Sciences.
The study followed children ages 3 to 6 and measured their skills by the end of kindergarten, looking at reading ability, memory, how well they could plan and control their behaviour (called executive function), and how they understood others' feelings.
Montessori children showed lasting gains across multiple skills
By kindergarten, children who attended Montessori preschools outperformed their peers in reading, short-term memory, executive function (the ability to plan, focus, and manage behaviour), and social understanding. Importantly, these benefits persisted—unlike some earlier preschool studies that showed gains fading by kindergarten. The Montessori approach, developed over 100 years ago, centres on allowing children to learn through purposeful activity and curiosity rather than direct instruction.
Montessori costs significantly less without sacrificing quality
Montessori preschool programs operated at about $13,000 less per child annually compared to conventional preschool options. This cost advantage reflects the method's design, which relies on self-directed learning and prepared environments rather than intensive adult-led activities. The researchers noted that additional savings may come from higher job satisfaction among Montessori teachers, though this requires further study.
Evidence is strongest for US public schools—Singapore context unclear
This study was conducted entirely in the United States and looked specifically at public Montessori programs. While the findings are encouraging, we don't yet know whether the same results would apply in Singapore's preschool environment, which has different structures, teacher training systems, and educational priorities. The research also followed children only through kindergarten; longer-term follow-up would strengthen confidence in lasting benefits.
If exploring Montessori options, consider these points
- Look for Montessori programs with formal teacher training, since the study examined established public programs rather than informal settings.
- Expect your child to show stronger reading and memory skills by the start of primary school compared to traditional preschool peers.
- Request information about program costs and compare against local preschool options to assess value.