About Us

Programs & Rates


General Program Information

ArtworkSourdough Montessori offers full-year pre-school and kindergarten programs which feature an academic year, (late August through early June), and summer session, (mid-June through late August).  We service students aged three to six (including a dedicated kindergarten program) with a full Montessori curriculum which includes lessons in Practical Life, Language, Art, Math, Geography, Science, Music, Movement, Cultural Awareness, and Sensorial exercises.   

For the mornings, our pre-school and kindergarteners work together in a mixed age setting of three to six year olds that allows each to benefit from the other.  The older kids, who generally master skills sooner, feel the pride of mentoring the younger children by helping them with their lessons.  The younger children feel more connected to both their class as a group and their own work as they see and work with their older peers.  In the afternoons, our kindergartners meet together to pursue their own enhanced curriculum.

Ronan and RabbitThe Whole Child
We care for the development of what we call the whole child – by which we mean the child's mind, body and spirit.   A balance of classroom time and outdoor play is thus offered to facilitate both intellectual as well as physical growth.  Healthy snacks are also offered all day long to best meet the nutritional needs of our students.  The overall self-esteem and energy of the child is something we are equally aware of and interested in nurturing.

Independence / Order
A hallmark of the Montessori classroom is the relative independence it offers the student.  While this is certainly the case at Sourdough, we make sure our students enjoy their freedom in the context of a group that has clear rules, both inside the classroom and outside, to maintain order and ensure that our environment is safe and enjoyable for all.  Students learn, for example, that a work, (the name we give to an independently pursued learning exercise), may only be used if it is available, and only to the extent the student has been shown how to use and handle the work, (for reasons more involved than a parenthetical digression).  There are guidelines for where a work can be done, (only in an appropriate area with enough open space to comfortably set down an area mat or work at a table), and limitations on when the child can perform their chosen work, (we can't do painting when it is lunch time even if we really, really want to).

Order in the class, both amongst our Sourdough students and within the physical design and layout of the school, (the space itself is clean, neat and open), helps to create an environment that is peaceful and calming – perhaps shockingly so, at least to the many who come away from their initial Sourdough experience expressing a certain disbelief, (bordering on shock), at the sight of so many of our kids working so effectively - and so quietly, at once before them.

Peace Education
ArtWe teach the importance of the care for our environment and the things in it.  This includes emphasis on the objects we see and study in nature as well as our classroom materials.  We also learn about the importance of care for each other.  Concepts of peace and the peaceful resolution of conflict, and principals based on the values of compassion and understanding of others are central not just to our curriculum, but represent the very essence of our spirit as a school.  Many families tell us that long after their children have graduated from our school, they still employ techniques and approaches they learned at Sourdough to help in the always difficult challenge of getting along well with others.

Our Classrooms
We have two classrooms; upstairs – with a capacity of 28 students, and downstairs with a capacity of 18.

Our Student Teacher Ratios
Student teacher ratios are 8/1 or less.  Each classroom has at least one fully trained and accredited Montessori teacher and the teachers work together in a team approach that is centered on the development of the child.

Hours of Operation
Our hours of care are 7:45 a.m. to 5:45 p.m. Monday through Friday.  We are closed for most major holidays and seasonal breaks but open year long.   

Sourdough Montessori School
Programs and Rates

2015/2016 Programs & Rates
Hours of Operation: 7:45 a.m. - 5:45 p.m.

Half Day Program  7:45 a.m. to 12:45 p.m.

3 Half Days $555/month
4 Half Days $615/month
5 Half Days  $665/month


Full Day Program  7:45 a.m. to 3:20 p.m.

2 Full Days  $530/month
3 Full Days $630/month
4 Full Days $710/month
5 Full Days $790/month


Late Day Program  3:30 p.m. - 5:45 p.m.

3 Late Days $80/month
4 Late Days  $100/month
5 Late Days $115/month


*Late day is offered to children 4 years and older or 3 year
  olds who are napping due to the length of the program*

Additional Fees

New Student Application Fee $80 (non-refundable)
Annual Enrollment Fee  $85 (non-refundable)
Annual Supplies and Materials $85 (non-refundable)
Tuition Deposit $500 (held for duration of enrollment)
New Student Orientation Day $25
Music $20/month
Field Trips Actual cost
Drop In Day Fee Half Day: $35/day; Full Day: $50/day


Sibling Discounts: A 10% discount is provided for enrolled sibling students.

Partial Scholarship Applications Available Upon Request

Primary Enhancement Program

Boys artThe last year of the Montessori program is really the icing on the cake for our Sourdough students. Over their first 2 years at Sourdough they have watched their older peers doing the things older kids do at Sourdough: reading, writing, solving complex math problems, going on special field-trips, and more. Kindergartners become the class leaders, teaching and sharing with their younger counterparts the skills they have mastered, (such as zipping coats, tying shoes and reading books), and the principals they have learned to appreciate, (such as conflict resolution). They are our “junior staff” and when it is finally their turn to be a kindergartner at Sourdough, it is like a time of harvest for the entire child has become!

Our kindergarten students engage in numerous special events and field trips including, (but not limited to);


A professional music teacher joins us Thursday mornings to conduct a fun, active, music and movement class with the children. The music program is an additional charge of $17.50 a month.

Daily Schedule

Morning arrival time 7:45 to 8:45
Morning circle time 8:45
Montessori classroom time 9:00 to 11:00
Second line time - morning wrap-up 11:00 to 11:30
Lunch time 11:30 to 12:00
Outside play time 12:00 - 1:10
Pick up time for half-day schedule 12:45
Nappers go to nap room 12:30
Afternoon line time begins 1:15
Afternoon Montessori work period 1:30 to 3:00
Outside play time 3:00-3:25
Pick-up time for full-day schedule 3:15-3:20
Late Day Program 3:30 to 5:45

Summer Session

Summer sessionThe summer program begins in mid-June and runs for approximately nine weeks. In mid-August, the school closes two weeks as we get set for the new school year. Participation in the summer program is very flexible offering a variety of schedules.

School Calendar

Sourdough Montessori’s academic school year runs for approximately 10 months (late August to mid June), generally following the same schedule as the Bozeman Public Schools. Our school closures include the following:


Student Visit/Readiness Assessment

We accept three to six year old children based on their readiness for our program. An essential part of readiness for the incoming child is that they are fully potty-trained and have developed independence in using the bathroom. This and other issues can be more fully discussed during the parent’s initial tour of our school, (which is done without the child). An additional visit with the child allows us to evaluate the child’s development. At this time we can make the initial determination as to whether we feel our program is right for your child.

Curriculum and Classroom

BeeOur classrooms are organized by subject and offer a wide array of Montessori materials, (called “works”), which are designed to enhance the development of the learning three to six year old child. Our students regularly work independently on the lesson of their choice (after a teacher has shown it to them), choosing from the various areas of the classroom: practical life, sensorial, language, math, cultural materials, and art. Our curriculum also includes Spanish, music, peace education and a couple of field trips a year (more for kindergartners) as well as a rich exposure to many cultural topics through our rotating monthly themes. Details about our curriculum can be found in our Parent Handbook.

We have two primary mixed-age class groups; the upstairs classroom which holds 28 students and is staffed with four teachers, and the downstairs classroom which has 16 students and two teachers. All children spend their mornings in their designated class, (when they are not outside playing). In the afternoon, the youngest children nap, (in our Nap Room, and the kindergartners convene in an upstairs classroom.

Lunches and Snacks

Parents are required to provide a healthy lunch for the child. The school serves snacks three times during the course of a school day. Parents contribute to snack foods one week out of each year.

Before Your Child Starts

A Typical Day at Sourdough


Is there such a thing as a typical day at Sourdough?  Sort of.  For while it seems no two days are ever quite the same, and the nature of our work changes with our regularly varying Themes, our days generally follow a certain order that looks something like this:

Our Daily Day

Morning Arrival Time/Activity Room Play 7:45 to 8:45 a.m.
Morning Circle Time  8:45 a.m.
Montessori Work Period 9:00 to 11:00 a.m.
Second Line Time - morning wrap-up  11:00 to 11:30 a.m.
Lunch  11:30 a.m.
Outdoor play time 12:00-1:15 p.m.
Pick-up of half-day schedule  12:45 p.m.
Nappers go to Nap Room  1:00 p.m.
Afternoon Storytime 1:15 p.m.
Afternoon Montessori Work Period 1:30 p.m. to 3:00 p.m.
Classroom Chores and Gathering at Circle 3:00 p.m. to 3:15 p.m.
Pick-up for Full Day schedule 3:20 p.m.
Outdoor Playtime 3:15 to 4:30 p.m.
Late day Snack 4:30 p.m.
Late Day Project/Free Play 4:45 p.m. to 5:45 p.m.

Annual Themes
2015/2016 Themes
Sourdough Montessori School

September: Classroom Guidelines and Grace and Courtesy
- Identifying and expressing feelings
- Guidelines for feeling safe
- Guidelines for working in the classroom
- Our Peaceful Classroom: Conflict Resolution

October: Health and The Human Body
- Nutrition: identifying growing food and food groups
- Healthy Habits: tooth brushing, exercise, sleep
- The Human Body: naming our body parts
- The Inside of Our Body: naming bones and organs
- My five Senses

November: North America/Native Americans
- World continents
- North America: Canada, USA, Mexico
- The United States of America
- Native American traditions, stories, music

December: Winter Holidays and Celebrations Around the World
-Our Holiday Performance Rehearsal

January: The Earth and Its Elements
- Air: photosynthesis, respiration, unique properties
- Land (Inner Earth): layers of the Earth, volcanoes
- Land (land formations): mountains, rocks, continents
- Water: essential for life, unique properties, water cycle           

February: The Solar System
- Inner planets, Outer planets
- Our moon, Our Sun
- Comets & asteroids
- Space Exploration, our Vast Universe           

March: Dinosaurs
- Traveling back in time, fossil record
- Herbivores, Omnivores, Carnivores
- Classification by environment
- Dinosaur facts

April: Vertebrates
- Animals Classification and characteristics
- Mammals
- Birds
- Reptiles
- Amphibians
- Fish                       

May: Spring & Migration

Snow Kids