#1 Private Schools with the Smallest Classes in King County, WA
Yellow Wood Academy
Alternative school · Grades 4–12
1.6 students per teacher
Mercer Island, WA
AOverall grade101 students2 students per teacher
2026 lists
Private Schools with the Smallest Classes in King County, WA
Private schools in King County, WA with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 139 schools.
#2 Private Schools with the Smallest Classes in King County, WA
Dartmoor School - Seattle
Alternative school · Grades 4–12
2 students per teacher
Seattle, WA
AOverall grade49 students2 students per teacher
#3 Private Schools with the Smallest Classes in King County, WA
Eastside Montessori Education Family
Montessori school · Grades Pre-K–5
2.2 students per teacher
Sammamish, WA
A+Overall grade54 students2 students per teacher
#4 Private Schools with the Smallest Classes in King County, WA
Brightmont Academy - Sammamish
Alternative school · Grades 1–12
2.5 students per teacher
Issaquah, WA
AOverall grade44 students3 students per teacher
#5 Private Schools with the Smallest Classes in King County, WA
Dartmoor School--Bellevue
Alternative school · Grades 1–12
3.1 students per teacher
Bellevue, WA
AOverall grade62 students3 students per teacher
#6 Private Schools with the Smallest Classes in King County, WA
Chrysalis High School
Alternative school · Grades 6–12
3.3 students per teacher
Woodinville, WA
A-Overall grade155 students3 students per teacher
#7 Private Schools with the Smallest Classes in King County, WA
Northlake Academy
Independent school · Grades Pre-K–5
3.7 students per teacher
Kirkland, WA
A+Overall grade108 students4 students per teacher
#8 Private Schools with the Smallest Classes in King County, WA
Bel-Red Bilingual Academy
Independent school · Grades Pre-K–2
3.9 students per teacher
Bellevue, WA
AOverall grade60 students4 students per teacher
#9 Private Schools with the Smallest Classes in King County, WA
Les Lilas French Bilingual Community School
Montessori school · Grades Pre-K–3
4.2 students per teacher
Kirkland, WA
AOverall grade52 students4 students per teacher
#10 Private Schools with the Smallest Classes in King County, WA
Northwest Yeshiva High School
Jewish day school · Grades 9–12
4.3 students per teacher
Mercer Island, WA
AOverall grade57 students4 students per teacher
#11 Private Schools with the Smallest Classes in King County, WA
Montessori Childrens House
Montessori school · Grades Pre-K–8
4.4 students per teacher
Redmond, WA
AOverall grade79 students4 students per teacher
#12 Private Schools with the Smallest Classes in King County, WA
Seattle Jewish Community School
Jewish day school · Grades K–5
4.5 students per teacher
Seattle, WA
AOverall grade54 students5 students per teacher
#13 Private Schools with the Smallest Classes in King County, WA
Chrysalis Elementary School
Alternative school · Grades K–6
4.8 students per teacher
Woodinville, WA
AOverall grade50 students5 students per teacher
#14 Private Schools with the Smallest Classes in King County, WA
Dartmoor School
Alternative school · Grades 3–12
4.9 students per teacher
Issaquah, WA
AOverall grade78 students5 students per teacher
#15 Private Schools with the Smallest Classes in King County, WA
Arbor Schools
Montessori school · Grades Pre-K–5
4.9 students per teacher
Sammamish, WA
AOverall grade44 students5 students per teacher
#16 Private Schools with the Smallest Classes in King County, WA
Evergreen Academy
Independent school · Grades Pre-K–5
5.2 students per teacher
Bothell, WA
A+Overall grade171 students5 students per teacher
#17 Private Schools with the Smallest Classes in King County, WA
Jewish Day School of Metropolitan Seattle
Jewish day school · Grades Pre-K–8
5.2 students per teacher
Bellevue, WA
AOverall grade77 students5 students per teacher
#18 Private Schools with the Smallest Classes in King County, WA
Global Idea School
Independent school · Grades K–4
5.2 students per teacher
Redmond, WA
AOverall grade42 students5 students per teacher
#19 Private Schools with the Smallest Classes in King County, WA
French American School of Puget Sound
Independent school · Grades Pre-K–8
5.3 students per teacher
Mercer Island, WA
A+Overall grade312 students5 students per teacher
#20 Private Schools with the Smallest Classes in King County, WA
Tilden School
Independent school · Grades K–5
5.3 students per teacher
Seattle, WA
AOverall grade62 students5 students per teacher
#21 Private Schools with the Smallest Classes in King County, WA
Cedar River Montessori School
Montessori school · Grades Pre-K–8
5.5 students per teacher
Renton, WA
A+Overall grade79 students6 students per teacher
#22 Private Schools with the Smallest Classes in King County, WA
Bright Water Waldorf School
Independent school · Grades Pre-K–8
5.5 students per teacher
Seattle, WA
A+Overall grade56 students6 students per teacher
#23 Private Schools with the Smallest Classes in King County, WA
Seattle Waldorf School
Independent school · Grades Pre-K–12
6 students per teacher
Seattle, WA
A+Overall grade193 students6 students per teacher
#24 Private Schools with the Smallest Classes in King County, WA
St. Joseph School-- Issaquah and Snoqualmie
Diocesan school · Grades Pre-K–7
6.2 students per teacher
Issaquah, WA
A+Overall grade165 students6 students per teacher
From official public records, updated October 2026.