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Child care center 

Cornerstone Montessori

1644 Gault St, Sumner, WA 98390
licensed capacity
132
open each week
5 days
a week, county median
$249
year first licensed
2003

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Licensed by the state

About

About Cornerstone Montessori

Cornerstone Montessori is a licensed child care center in Sumner, Washington. The state has licensed it since September 2, 2003, for up to 132 children, serving toddlers, preschoolers and school-age children.

It is open Monday to Friday, 6:30 AM to 5:30 PM. It describes a Montessori approach, with toddler care. It says it provides meals.

Washington State Department of Children, Youth, and Families publishes its inspection reports on its own website; the link is in the inspections section below.

MontessoriSchool-ageMeals provided

Ages served: toddlers, preschoolers and school-age children

From the state license
Ask when you call: rates, current openings, staff-to-child ratio and whether it accepts child care subsidies.
Type
Child care center
Ages
Toddlers, preschoolers and school-age children
Hours today
Closed today
Licensed capacity
132 children

Hours

Hours

Monday6:30 AM to 5:30 PM
Tuesday6:30 AM to 5:30 PM
Wednesday6:30 AM to 5:30 PM
Thursday6:30 AM to 5:30 PM
Friday6:30 AM to 5:30 PM
SaturdayNot listed
SundayTodayNot listed
Hours it lists: “children can be on campus up to ten hours between 6:30AM and 5:30PM”

Programs

Programs and care

AgesToddlers, preschoolers and school-age childrenFrom the state license
ProgramsToddler care
ApproachMontessori
StaffLead Teachers are AMS or MACTE Certified, or in the process of obtaining certification
Daily lifeMeals provided; Snacks provided. Potty training: Toilet learning is a partnership between family and teacher
SafetyOutdoor playground
Discounts7% sibling discount for students enrolled in full time programs
Parent updatesParent app (Transparent Classroom)
Licensed capacity132 childrenFrom the state license
A daycare without an item may still offer it; ask.

Cost

Tuition and costs

Cornerstone Montessori has not listed its tuition. For comparison, full-time toddler care at a child care center in Pierce County has a median price of $249 a week (U.S. Department of Labor, 2022).

Ask the daycare for its ratesIt has not listed its tuition. The county medians below are a starting point.
Pierce County medians, full time, per week

Infant

Center$328
Home daycare$254

Toddler

Center$249
Home daycare$205

Preschool

Center$249
Home daycare$209

School age

Center$374
Home daycare$195

County median full-time prices at centers and home daycares, U.S. Department of Labor, National Database of Childcare Prices, 2022 (the latest year). Not this daycare's rates; prices have risen since.

State record

Inspection reports for Cornerstone Montessori

Washington State Department of Children, Youth, and Families publishes inspection reports on its own website; we have not added them to this page yet. Use the link below to read them there.

License

Status
Licensed and operating
License type
Licensed child care center
Capacity
132 children
Ages
Toddlers, preschoolers and school-age children
First licensed
2003
License number
#267897
See the state's record

Inspections

Washington State Department of Children, Youth, and Families publishes inspection reports on its own website; we have not added them to this page yet. Use the link below to read them there.

Washington publishes its inspection reports on its own site. Read them there.

Copied from Washington State Department of Children, Youth, and Families on October 2, 2026. Rule wording, severity and dates are the state's.

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Daycares near Cornerstone Montessori

Child care centerTakes infants

Tiny Sparts

1707 Main St, Sumner, WA

FAQ

Questions about Cornerstone Montessori

Is Cornerstone Montessori licensed?

Yes. Washington State Department of Children, Youth, and Families lists it as licensed and operating, first licensed September 2, 2003.

Does Cornerstone Montessori have inspection violations?

Washington State Department of Children, Youth, and Families publishes inspection reports on its own website; we have not added them to this page yet. Use the link below to read them there.

How many children can Cornerstone Montessori care for?

132, the licensed capacity on the state record. It is licensed to serve toddlers, preschoolers and school-age children.

What are Cornerstone Montessori's hours?

Monday to Friday, 6:30 AM to 5:30 PM. Holiday hours can differ.

How much does Cornerstone Montessori cost?

It has not listed its tuition. Call (253) 987-7239 to ask.

What is Cornerstone Montessori's phone number?

(253) 987-7239.

Where is Cornerstone Montessori?

1644 Gault St, Sumner, WA 98390. The nearest other daycare we list is Right at School at Maple Lawn Elementary, 0.2 miles away.

Sources: Washington State Department of Children, Youth, and Families (license) · U.S. Department of Labor, 2022 (county prices).