Technically NOT Hacking

"We're only experimenting; it's not like we're breaking any rules!"
Eva is young and carefree, with a passion for computer science and programming. She's always eager to get into a new project; it's an escapism from a rough life.
Han is the new boy. He doesn't talk to anyone, and detests computer science, too bad his mother chose his GCSE options.
However, when the two are paired in a project, they notice something is wrong with their school, and they have to do something terrible to find out more.