| | Established | 2007 |
| | Level | Upper Primary |
| | Type | Co-Educational |
| | Board | Others |
| | Medium of instruction | English |
| | No. of students | 475 |
| | No. of Teachers | 15 |
St.Mary School's location is at Along East, West Siang. It is a Other Board, with a team of 18 dedicated and professional faculties, which are here to ensure that the children get the most from their education.
In 2007, St.Mary School was launched. This school's primary medium of instruction is English and the student teacher ratio is 26:1. The school takes pride of its excellent teaching methodology.
Classes from 1 to 8 run in this school. 475 is approximately the current student strength of this school.
The school has given exceptional results in the academic sphere and its students have excelled in extra co-curricular activities too. The perentage of students passing the exam is 100% with 69% scoring first grade.
| School Code | 12070101918 |
| Status of Building | Private |
| Total Classrooms | 7 |
| Student Teacher Distrubution | Teachers 15 | Student 475 | |
| Boys to Girls Ratio | Boys 167 | Girls 173 | |
| Students Distribution | Primary 405 | Secondary 70 | Hr.Secondary 0 |
