Not at all, the existing supply of electricity from the grid works in harmony with the solar system. It is like two parallel roads, one coming from the solar system and the other from the grid, both bringing electricity independently.
Only authorized personnel can access the system to ensure safety. Children are unable to access the system on their own without permission.
Since there are 2 sources of electricity now, the school pays separately for the grid and the solar system.
This is a result of the advancement in technology of the solar panels. Moreover, there are no operating costs since Sun doesn’t charge any money for using its energy!
Yes, the solar system being independent, will continue to run even during power cuts.