IB score refers to the score of International Diploma Course (IB). IB is a high school curriculum all over the world, and it is an educational system with a unique concept, focusing on cultivating students' comprehensive quality and all-round development. The IB score is obtained through the IB exam, which is considered as an indicator of high school and university entrance in some countries, second only to SAT or ACT.

IB scores are calculated by examination scores, internal scores and scores obtained by students' papers, research or projects. Test scores are usually evaluated between 7 and 1, and the higher the weighted average score, the higher the score. Internal grading means that teachers grade students' homework, including students' oral introduction, notes, group discussions, demonstrations and speeches. Students' papers, research or project scores will also affect the final evaluation of IB scores.

Applying to universities in some countries usually requires IB scores. Like SAT and ACT scores, it plays an important role in the process of university enrollment in the United States and other places. The level of IB scores may have an impact on the university admission decision. In addition, IB scores can also enable candidates to obtain course exemption or certification, gain more free time in universities, and sometimes even get credit transfer.