St. Helena Montessori School: AMI-accredited 18 months–12th grade on 20-acre farm campus with specialized support for learning differences
St. Helena Montessori School serves students from 18 months through 12th grade on a 20-acre farm campus in Saint Helena, CA. The school is internationally accredited by the Association Montessori Internationale (AMI) and offers specialized support for students with learning differences and ADD/ADHD, making it a welcoming option for families seeking a Montessori approach adapted for their child's needs.
The school's Montessori model emphasizes individualized learning and hands-on engagement, which can be particularly beneficial for students with different learning styles. With an average class size of 20 students and 29 classroom teachers, the school provides a structured yet flexible environment where students can progress at their own pace. The farm campus offers unique outdoor learning opportunities and recreational programs including mountain biking, which supports physical activity and connection to nature.
St. Helena Montessori enrolls 266 students across its Toddler, Primary, Elementary, and Adolescent Programs. The school offers rolling admissions, and 30% of families receive financial aid. Sports and extracurricular activities include basketball, track and field, volleyball, and clubs focused on arts, music, and cultural awareness, providing diverse ways for students to engage and build confidence.
At a Glance
TypeMontessori School
GradesPrekindergarten-12
Students266
Class Size20:1 ratio
Fin. Aid30% receive aid
Est.1981
DeadlineNone / Rolling
Accreditation & Memberships
Association Montessori Internationale (AMI)
Western Association of Schools and Colleges (WASC)
School Information
| School Type | Montessori School |
| Year Founded | 1981 |
| Total Students | 266 |
| Total Classroom Teachers | 29 |
| Average Class Size | 20 |
| Grades Offered | Prekindergarten-12 |
Admissions Information
| Admissions Director | Ted Stonbely |
| Admission Deadline | None / Rolling |
| Percent on Financial Aid | 30 |
Student Body Information
| Student Body Type | Co-ed |
| Percent of Students of Color | 3 |
Academic Programs Information
Special Education Programs
Learning Difference ProgramsADD/ADHD Support
Sports and Extracurricular Information
| Sports | Basketball · Mountain Biking · Track and Field · Volleyball |
| Clubs and Organizations | Club or Organization: · Astronomy/Star Gazing · Arts and Music Programs: · Cultural Awareness · Recreational Athletic Programs: · Mountain Biking |
Additional Information
| Classroom Dress Code | Formal |
| School Memberships | Association Montessori Internationale (AMI) · Western Association of Schools and Colleges (WASC) |
| Religious Affiliations | Nonsectarian |
| School Calendar | shmontessori.org/calendar |
| Summer School Offered | Yes |