This website was made by George Valtas, Razvan Lichi, Lucian Negru and Stefan Iordache for the purpose of providing reliable IB Math HL questions to students. Unlike other websites, this one offers you the choice to get questions based on chapters, so you wouldn't have to search through endless past papers until you finally find a question on standard deviation. We also made this website for our CAS project, it required us to develop our time management, communicaion and organisasional skills.