Government Higher Secondary School Thirumazhisai
| School Name | Government Higher Secondary School Thirumazhisai |
| Address | Thirumazhasai- Ward-1, Ward III, Poonamallee, Thiruvallur, Tamilnadu |
| Location | Thirumazhasai- Ward-1 |
| City | Thiruvallur |
| District | Thiruvallur |
| State | Tamilnadu |
| Pincode | 600124 |
| Category | Higher Secondary School |
| Block | Poonamallee |
Government Higher Secondary School Thirumazhisai is located in Thirumazhasai- Ward-1, Ward III, Poonamallee, Thiruvallur, Tamilnadu and was established in year 1949. The school is a Boys and is located in Rural area. This is a Higher Secondary school and is currently operational. It's affiliated with State Board for class-X & class-XII exams. The school is managed by Department of Education. This school falls under Poonamallee (Sc) assembly constituency. The school falls under Thiruvallur (Sc) parliamentary constituency. The first mode of communication is Tamil in the school but English is also spoken during classes.
| Class VI to VIII | 128 Students |
| Class IX to XII | 536 Students |
| Total Students | 664 Students |
| Total Teachers | 34 Teachers |
| Student-Teacher Ratio | 20:1 |
| Student-Classroom Ratio | 15:1 |
The school has around seven hundred students studying being taught by around 34 teachers. The school has student-teacher ratio of 20 students per teacher. Thirty teachers are appointed on Regular basis and rest four are appointed on Part-time basis. Eleven teachers are Male and remaining 23 are Female. In terms of Academic qualification two teachers are Below Graduate, twelve are Graduate and rest twenty are Post Graduate. Four teachers are trained in Computer. The student classroom ratio is 15:1, means on an average fifteen students sit in a classroom which is very good. There are 128 students in class VI to VIII and 536 students in class IX to XII.
The school is in a Govt. building and it has pucca boundary walls. The school has total forty three clasrooms and five other rooms. The school has both internet facility and DTH facility for students. The school has eight laptops, twenty two desktops, one scanner, one LED, two webcams and one generator in its premises. There is reading corner, library and book bank for students. There are eighteen boys toilets for students. The school has both hand wash facility and drinking water facility for people.