0-3 Teacher Training-Assistants to Infancy

The Montessori Assistants to Infancy Training began in 1947 in Rome, Italy. The training was based on many hours of  scientific observation of infants and very young children. The course included components which continue to be supported by contemporary research, such as the use of self-hypnosis for childbirth, gentle birth practices, the awareness of infants, the importance of touch and communication, as well as the importance of language, music and joy in the environment. The training has always emphasized the importance of freedom in an environment prepared with interesting objects that encourage movement and exploration. Special clothing, furnishings and toys made with careful attention to detail are designed in response to the observed needs of the infant. 

In 1980, Dr. Silvana Montanaro, offered the first Assistants to Infancy (A to I) Training accredited by AMI in Rome. In 1982, she brought this course to the United States.

A to I students are prepared to work with expecting parents, to assist with the infant at birth, to prepare beautiful and responsive environments, and to work as lead teachers in infant and toddler communities in schools, daycare settings and hospitals.

A to I courses are 14 months long with two summers sessions on site and assignments in the intervening academic year. During the summer sessions, students prepare their own reference manuals (albums) and timelines of child development. Some handmade materials are required (you may be surprised by your hidden abilities.) Progressive relaxation sessions are offered daily.


Each course is two summers.
A new course begins every year in June.


Accepting applications for this course

First Summer 2020: June 3 – July 24
Second Summer 2021: June 7– August 6


First Summer 2021: June 7 – July 30
Second Summer 2022: June 6 – August 5


700 Knox Ct., Denver, CO 80204


First summer

The first summer’s work begins with an overview of Montessori theory and practice, following the child’s natural development and focusing on the period from conception to age three. Obstetrics, hygiene, and nutrition cover the anatomy and physiology of reproduction, fetal development, birth, health issues, and the puerperium (the first eight weeks after birth). We consider the preparation of supportive and beautiful environments and their adaptation to the child’s changing needs. Emphasis is on the home and family environment during this first summer of training, but is easily applied to group settings.

Between the two summers, students complete 250 hours of observation of children from birth to three at home and in group settings. Each student completes one week of student teaching with children in either a Nido or Infant Community. During that week, the student is visited for support and evaluation by a course staff member, either in Denver or at one’s own location. Travel and lodging expenses are the student’s responsibility.

The first summer ends with a practice written examination and a conference.

Second summer

The second summer adds a study of child neuropsychiatry and of environments for children in a Nido and an Infant Community (out-of-home settings), including appropriate materials and activities.

Comprehensive written and oral examinations are given at the end of the second summer, offering an opportunity to consolidate and share what was learned.


Required Reading:

Montanaro, Silvana Quattrocchi, M.D.
Understanding the Human Being
(Medical Text – Purchased only from TMI)

Montessori, Maria, M.D.
Education for a New World
The Absorbent Mind
The Child in the Family
The Discovery of the Child
The Formation of Man
The Secret of Childhood
The 1946 London Lectures

Standing, E.M.
Maria Montessori: Her Life and Work

Recommended Reading:

Eliot, Lise, PhD.
What’s Going on in There?

Erikson, Erik
Childhood and Society

Kaplan, Louise
Oneness and Separateness

Stern, Daniel
The Interpersonal World of the Infant

Resources for Books:


The Montessori Institute has a library with all of the required and recommended reading. You may check these books out on an overnight basis when you are in Denver for the summer.