| | Established | 1860 |
| | Level | Secondary |
| | Type | Girls |
| | Board | Others |
| | Medium of instruction | English |
| | No. of students | 628 |
| | No. of Teachers | 21 |
Royapettah in Chennai has a school named St. William'S High School. 13 dedicated and professional teachers ensure that the children get the maximum out of their eduaction in this Other Board school.
1860 saw St. William'S High School being launched. English is the primary medium of instruction for this school and the student teacher ratio is 48:1. The school tries to provide best learning environment.
The school provides education to students from class 1 to 10. This school's student strength is approximately 628. The library in this school has 4525 books.
The school has given exceptional results in the academic sphere and its students have excelled in extra co-curricular activities too. 100% qualify examination with 100% scoring first grade.
| School Code | 33020601407 |
| Status of Building | Private |
| Total Classrooms | 11 |
| Sunday | 8:00 am - 6:00 pm |
| Monday | 8:00 am - 6:00 pm |
| Tuesday | 8:00 am - 6:00 pm |
| Wednesday | 8:00 am - 6:00 pm |
| Thursday | 8:00 am - 6:00 pm |
| Friday | 8:00 am - 6:00 pm |
| Saturday | 8:00 am - 6:00 pm |
| Student Teacher Distrubution | Teachers 21 | Student 628 | |
| Boys to Girls Ratio | Boys 0 | Girls 628 | |
| Students Distribution | Primary 311 | Secondary 317 | Hr.Secondary 0 |
