A Certain Scientific Railgun is about students who possess unique psychic powers. There is an 
academy for students who are known as Espers(ESP). Their powers can range from absolutely harmless to incredibly potent.

The anime tackles classic sci-fi themes with aspects such as cloning electromagnetic powers and the likes.. 
        A Certain Scientific Railgun explores the science side better than most with fantastic world building. The Academy is ten years ahead of the rest of the world and this is where the science Side thrives. The science-ey stuff in this anime is quite intriguing .