| | Established | 1974 |
| | Level | Secondary |
| | Type | Girls |
| | Board | Others |
| | Medium of instruction | Tamil |
| | No. of students | 227 |
| | No. of Teachers | 28 |
Ghs(Girls)-Thellar's location is at Thellar, Tiruvannamalai. The children get the most out of their education as they are taught by a team of 15 professional and dedicated faculties in this Other Board school.
In 1974, Ghs(Girls)-Thellar was launched. The primary medium of instruction is Tamil and the student teacher ratio is 15:1. The school takes pride of its excellent teaching methodology.
This school runs classes from 6 to 10 to provide education to students. This school's student strength is approximately 227. This school's library has 1300 books.
The school has given exceptional results in the academic sphere and its students have excelled in extra co-curricular activities too. 100% from this school qualified the examination and out of those, 103% scored first grade with flying colors.
| School Code | 33060608603 |
| Status of Building | Government |
| Total Classrooms | 3 |
| Student Teacher Distrubution | Teachers 28 | Student 227 | |
| Boys to Girls Ratio | Boys 0 | Girls 227 | |
| Students Distribution | Primary 0 | Secondary 227 | Hr.Secondary 0 |
