Tndta Middle School Kalvilai
| School Name | Tndta Middle School Kalvilai |
| Address | Kalvilai, Semmarikulam, Udangudi, Thoothukudi, Tamilnadu |
| Location | Semmarikulam |
| City | Thoothukudi |
| District | Thoothukudi |
| State | Tamilnadu |
| Pincode | 628210 |
| Category | Upper Primary School |
| Block | Udangudi |
Tndta Middle School Kalvilai is located in Kalvilai, Semmarikulam, Udangudi, Thoothukudi, Tamilnadu and was established in year 1950. The school is a Co-educational and is located in Rural area. This is a Upper Primary school and is currently operational. The school is managed by Government Aided. It is located in Tiruchendur assembly constituency. This school comes under Thoothukkudi parliamentary constituency. The medium of instructions is Tamil in the school.
| Class I to V | 30 Students |
| Class VI to VIII | 36 Students |
| Total Students | 66 Students |
| Total Teachers | 4 Teachers |
| Student-Teacher Ratio | 17:1 |
| Student-Classroom Ratio | 13:1 |
The institution has around one hundred students studying and has recruited total 4 teachers. The school has student-teacher ratio of 17 students per teacher. All of the teachers are appointed on Regular basis. One teacher is Male and remaining three are Female. In terms of Academic qualification three teachers are Below Graduate and rest one is Post Graduate. None of the teachers are trained in Computer. The student classroom ratio is 13:1, means on an average thirteen students sit in a classroom which is very good. There are 30 students in class I to V and 36 students in class VI to VIII.
The school is in a private building and it has pucca boundary walls. The school has total five clasrooms. The school has one desktop in its premises. There is both reading corner and book bank for students. There are one boys toilet and one girls toilet for students. The school has both hand wash facility and drinking water facility for people.