There are many different kinds of extra-sensory perception. Some people claim they can see future events. Other people claim they can see far-off events in their mind. Students will judge for themselves in this introduction that provides information on the evidence and skepticism about ESP.
My 2nd grader brought this home from the school library and it is just a very basic book about what ESP is and different associated topics. It's not something I necessarily want my child to "read up on" per se but I'm glad we can talk about it together.