Sibnagar Rangapahar Milon High School
| School Name | Sibnagar Rangapahar Milon High School |
| Address | Sibnagar Gaon, Kharnaidisa, Dhansiri, Lumbajong, Diphu, Assam |
| Location | Sibnagar Gaon |
| City | Diphu |
| District | Karbi Anglong |
| State | Assam |
| Pincode | 782470 |
| Category | Secondary School |
| Block | Lumbajong |
Sibnagar Rangapahar Milon High School is located in Sibnagar Gaon, Kharnaidisa, Dhansiri, Lumbajong, Diphu, Assam and was established in year 1994. 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 Government Aided. This school falls under 019-Diphu assembly constituency. The first mode of communication is Assamese in the school.
| Class IX to XII | 46 Students |
| Total Students | 46 Students |
| Total Teachers | 6 Teachers |
| Student-Teacher Ratio | 8:1 |
| Student-Classroom Ratio | 23:1 |
The institution has around one hundred students studying and has 6 teachers to teach them. The school has student-teacher ratio of 8 students per teacher. All of the teachers are appointed on Regular basis. Four teachers are Male and remaining two are Female. All of the teachers have Graduate qualification. None of the teachers are trained in Computer. The student classroom ratio is 23:1, means on an average twenty three students sit in a classroom which is very good. There are 46 students in class IX to XII.
The school is in a Govt. building and it has no boundary walls. The school has total two clasrooms and one other room. The school has both hand wash facility and drinking water facility for people.