The Children's House, also known as early childhood, is a community of children from three to six years who live and learn together in a prepared learning environment. The Children’s House community provides children with the opportunity to develop through individual activities that aid the child's work of “self construction.” The Montessori teacher supports children as they learn how to sustain focused and concentrated attention, think clearly and constructively, resolve conflicts peacefully, and express themselves through language and the arts. Through the active development of their will and the satisfaction of their authentic needs, the children become self-disciplined and socially cohesive.

Areas of activity in the Children’s House level are practical life, sensorial exploration, language, mathematics, science, and cultural subjects such as geography, history, and art. Specialist classes in music, art, movement, and Spanish are also offered to the kindergarteners. The children's absorbent minds take in vast amounts of information and grasp sophisticated relationships and principles wholly and effortlessly.

Practical Life area focuses on children fulfilling their individual needs such as toileting, brushing hair, tying shoes, place setting, cleaning after meals, dusting, floor scrubbing, and so much more. The pride that develops as they master their own needs begins the process of taking ownership of their classroom and ultimately their learning.

Sensorial exploration continues as three to six-year-olds refine their senses. With lessons such as the silver bells, knobbed cylinders, pink tower, color boards, smell bottles, and rough and smooth, they continue to distinguish sounds, size and dimension, textures, smells, flavors, and sounds.

Language skills blossom into reading and writing in the Children’s House classroom. Insets, sandpaper letters, early grammar boxes, the moveable alphabet, and phonetic word boxes all aid the child’s exploration of language.

Mathematics comes to light in very concrete ways for Children’s House students. They explore addition, subtraction, division, and multiplication through hands-on materials such as the number rods, golden beads, bead stairs, multiplication/division peg boards.

Science, geography, and history are introduced and explored in the Children’s House through hands-on materials, such as land and water forms, puzzle maps, timeline of a child’s day, classification system, and simple experiments.

Through peacekeeping, modeling, and instruction children learn ways to talk and listen to their peers respectfully, identify and express their feelings, and develop conflict resolution skills. As a result the children also learn how to care for the people who make up their classroom community.