St. Thomas Montessori De San Mariano
School ID 415516 · Private K to 12 school · Barangay Zone III (Pob.), San Mariano, Isabela · Cagayan Valley (Region II)
Summary
St. Thomas Montessori De San Mariano is the largest of two private schools in San Mariano, with 228 learners in SY 2024-25. Its enrollment rose 17% from SY 2023-24, while private schools in San Mariano grew 10.5%.
It runs from elementary to senior high in Zone III (Pob.), a barangay of San Mariano in Isabela, within the Schools Division of Isabela in Region II (Cagayan Valley). In senior high it offers the Academic track, which is offered by all nine senior high schools in San Mariano.
The page lists the other schools in the same area and links to the dashboards of San Mariano, Isabela and the Schools Division of Isabela.
- Learners
- 228
- Up 33 from SY 2023-24
Key findings
- Enrollment rose 17% to 228 from SY 2023-24, while private schools in San Mariano grew 10.5%.
- The largest of 2 private schools in San Mariano.
- Offers the Academic track; all 9 senior high schools in San Mariano offer Academic.
Enrollment
SY 2024-25: 228 learners, up 33 from SY 2023-24.
| Grade | Male | Female | Total |
|---|---|---|---|
| Kindergarten | 12 | 16 | 28 |
| Grade 1 | 8 | 6 | 14 |
| Grade 2 | 10 | 7 | 17 |
| Grade 3 | 11 | 7 | 18 |
| Grade 4 | 7 | 10 | 17 |
| Grade 5 | 3 | 3 | 6 |
| Grade 6 | 5 | 9 | 14 |
| Grade 7 | 9 | 5 | 14 |
| Grade 8 | 8 | 3 | 11 |
| Grade 9 | 8 | 4 | 12 |
| Grade 10 | 8 | 8 | 16 |
| Grade 11 | 20 | 11 | 31 |
| Grade 12 | 17 | 13 | 30 |
| All grades | 126 | 102 | 228 |
| Track | Learners |
|---|---|
| Academic | 61 |
| Senior High School learners | 61 |
- 1 indigenous peoples (IP) learner in SY 2024-25
DepEd's public report has staff and facilities data for public schools only.
How it compares
It has the most learners of the 2 private schools in San Mariano in SY 2024-25.
Location
Barangay Zone III (Pob.), San Mariano, Isabela
Legislative district: 2nd District
Other schools in San Mariano
- Alejandrino Family Learning Center
- Angela Elementary School
- San Mariano National High School - Main
- San Mariano Central School SPED Center
- San Mariano II Central Integrated School
- San Jose Integrated School
- Alibadabad National High School
- Cadsalan Integrated School
- Del Pilar Integrated School
- Dicamay Integrated School
About this data
Figures for school ID 415516 come from DepEd's school data for SY 2023-24 and SY 2024-25 as of 25 October 2025. How the data was checked