In India, 20,000 teachers are employed by about 8,000 schools with no students : MOE

According to government data, about 8,000 schools nationwide had no students enrolled for the 2024–25 school year. West Bengal and Telangana had the highest percentage of these schools. 
There were 20,817 teachers working in the schools with no students. It was interesting to note that West Bengal has the most unenrolled schools (3,812) and 17,965 of these teachers.
Statistics from the Ministry of Education show that 7,993 schools had no students enrolled, which is more than 5,000 fewer than the 12,954 schools that had no students the year before.

In contrast, there were no such schools in Haryana, Maharashtra, Goa, Assam, Himachal Pradesh, Chhattisgarh, Nagaland, Sikkim, or Tripura. 
"States have been advised to address the issue of zero enrolment in schools, as school education is a state subject." To make the best use of manpower and infrastructure, several states have combined some of their schools," a senior official told PTI.
The data showed that there were no zero-enrolled schools in the Andaman and Nicobar Islands, Chandigarh, Lakshadweep, Dadra and Nagar Haveli, Puducherry, or Daman and Diu Union Territories. Additionally, Delhi has no schools with no students enrolled.

Telangana had the second-highest number of these schools (2,245), followed by Madhya Pradesh (463). Madhya Pradesh employed 223 teachers in these schools, compared to 1,016 in Telangana. 
There were 81 such schools in Uttar Pradesh. The state's affiliated schools that have had zero student enrollment for the last three academic years are set to have their recognition revoked, according to a statement released by the Uttar Pradesh Madhyamik Shiksha Parishad (UP Board).

More than 1 lakh single-teacher schools serve over 33 lakh children nationwide; the largest number of these schools is found in Andhra Pradesh, which is followed by Uttar Pradesh, Jharkhand, Maharashtra, Karnataka, and Lakshadweep. 
Nonetheless, Uttar Pradesh leads the pack in terms of student enrollment in single-teacher schools, followed by Jharkhand, West Bengal, and Madhya Pradesh.
The number of single-teacher schools fell by almost 6%, from 1,18,190 in 2022–2023 to 1,10,971 in 2023–2024.