Upgrade High School Kolhua Kalan
| School Name | Upgrade High School Kolhua Kalan |
| Address | Kolhua Kalan, Kolhuwa Kala, Barhi, Hazaribag, Jharkhand |
| Location | Kolhua Kalan |
| City | Hazaribag |
| District | Hazaribagh |
| State | Jharkhand |
| Pincode | 825413 |
| Category | Secondary School |
| Block | Barhi |
Upgrade High School Kolhua Kalan is located in Kolhua Kalan, Kolhuwa Kala, Barhi, Hazaribag, Jharkhand. Established 62 years ago, this 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 Barhi assembly constituency. The first mode of communication is Hindi in the school but English and Sanskrit is also spoken during classes.
| Class I to V | 193 Students |
| Class VI to VIII | 109 Students |
| Class IX to XII | 49 Students |
| Total Students | 351 Students |
| Total Teachers | 4 Teachers |
| Student-Teacher Ratio | 88:1 |
| Student-Classroom Ratio | 32:1 |
The institution has strength of around four hundred students who are taught by 4 teachers, which makes the student-teacher ratio of 88 students per teacher. One teacher is appointed on Regular basis and rest three are appointed on Contract basis. All of the teachers are Male. All of the teachers have Below Graduate qualification. None of the teachers are trained in Computer. The student classroom ratio is 32:1, means on an average thirty two students sit in a classroom which is very good. There are 193 students in class I to V, 109 students in class VI to VIII and 49 students in class IX to XII.
The school is in a Govt. building and it has pucca boundary walls. The school has total eleven clasrooms and one other room. The school has one tablet in its premises. There is both library and book bank for students. There are two boys toilets and two girls toilets for students. The school has both hand wash facility and drinking water facility for people.