Santo Thomas 3 Senior High School
| Status | Completed |
| Property Name | Santo Thomas 3 Senior High School |
| Year of Completion | 2014 |
| Capacity of Student | 417 |
| Capacity of Teacher | 21 |
| Total Classroom | 25 |
| Library | Yes |
| Science Laboratory | Yes |
| Art Laboratory | Yes |
| Playground | No |
| Canteen | Yes |
| Sport Fields | Yes |
| Indoor Court | Yes |
| Prayer Room | Yes |
| Clinic | Yes |
| Function Hall | Yes |
| Wifi | Yes |
| CCTV | Yes |
| Convenience Store | Yes |
| Parking Area | Yes |
| Dormitory | No |
| Others | Computer room |
| Website | https://smathomas3.sch.id/ |
| Street Name | Jl. Banteng |
| Street Number | 7 |
| District | Medan Helvetia |
| City | Medan |
| Province | Sumatera Utara |
| Postal Code | 20123 |
Description
Santo Thomas 3 Senior High School is located in Kecamatan Medan Helvetia, Medan, Sumatera Utara
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