Govt. High School Erattayar At Nalumukku
| School Name | Govt. High School Erattayar At Nalumukku |
| Address | Kalkoonthal, Nalumukku, Erattayar, Kattappana, Painavu, Kerala |
| Location | Kalkoonthal |
| City | Painavu |
| District | Idukki |
| State | Kerala |
| Pincode | 685515 |
| Category | Secondary School |
| Block | Kattappana |
Govt. High School Erattayar At Nalumukku is located in Kalkoonthal, Nalumukku, Erattayar, Kattappana, Painavu, Kerala and was established in year 1973. The school is a Co-educational and is located in Rural area. This is a Secondary school and is currently operational. It's affiliated with State Board for class-X exams. The school is managed by Department of Education. This school falls under Udumbanchola assembly constituency. The first mode of communication is Malyalam in the school.
| Class I to V | 40 Students |
| Class VI to VIII | 35 Students |
| Class IX to XII | 24 Students |
| Total Students | 99 Students |
| Total Teachers | 12 Teachers |
| Student-Teacher Ratio | 8:1 |
| Student-Classroom Ratio | 10:1 |
The institution has around one hundred students studying and has 12 teachers to teach them, which makes the student-teacher ratio of 8 students per teacher. Eleven teachers are appointed on Regular basis and rest one is appointed on Contract basis. One teacher is Male and remaining eleven are Female. In terms of Academic qualification one teacher is Below Graduate, eight are Graduate and rest three are Post Graduate. Four teachers are trained in Computer. The student classroom ratio is 10:1, means on an average ten students sit in a classroom which is very good. There are 40 students in class I to V, 35 students in class VI to VIII and 24 students in class IX to XII.
The school is in a Govt. building and it has partial boundary walls. The school has total ten clasrooms and four other rooms. The school has both internet facility and DTH facility for students. The school has ten laptops, three desktops, one scanner, one printer, two LEDs, one webcam and one generator in its premises. There is library for students. There are two boys toilets and one girls toilet for students. The school has both hand wash facility and drinking water facility for people.