The light switch will turn on automatically.

You can rest assured. This is not a big problem. .....

There are several possibilities. .

1 spring for the switch. You may have turned off your phone at night. But it's not completely unrelated. As soon as the school was electrified in the morning, the current surged. Plus the action of the spring. It is easy to turn on the switch.

2 yes. Poor contact led to the light coming on. .

Try a few more times. What's wrong with the switch? If there is a problem, find someone to correct it. There is nothing to pull. .

Don't think there is a ghost. .