IB有着独特的评估模式，学生的最终成绩由内部评估（占20%～30％）和全球统考成绩（70%-80%）共同构成。它考察学生在每个阶段的学习成果，而非某一次考试的成绩，从而更客观地评估学生的学术水平。
IB has a unique evaluation model. The final scores of students are composed of internal evaluation (20%-30%) and global unified examination results (70%-80%). It examines the students' learning achievements at each stage, rather than the results of a certain examination, so as to more objectively evaluate the academic level of the students.
它要求学生必须认真对待IBDP课程学习的整个过程。只有重视每一个阶段的学习，才有可能取得高分。学生参加全球统考后，IB考官将统一对试卷进行评阅和评分，IBO对考官的成绩进行最终审核，然后发布最终分数。
It requires students to take their entire IBDP journey seriously. Only by paying attention to each stage of learning can they get a high score. Once exams are taken by students, the IB examiners will uniformly review and grade the papers, and the final scores are released upon a final review of examiner's grades by the IBO.
正因为这种独特的评估方式，让IB改变了“一考定终生”的单纯学业评估。它从内外相结合的评估方式确保了考试的权威性，同时也更客观的分析了学生的成绩情况。
It is precisely because of this unique evaluation method that IB has changed the pure academic evaluation of "one exam for a lifetime". It integrates internal and external evaluation methods to ensure the authority of the exam, and at the same time analyzes students' performance more objectively.
