Assessment for the award of the IB Diploma comprise both externally-assessed and teacher-assessed components.
The final IB Examinations form 70-80 percent of total marks for each subject. Other key external assessments include the Theory of Knowledge essay, the Extended Essay and the World Literature (Language A) assignments. These are completed by students over a period of time under teacher supervision, and marked by external examiners.
Between 20-30 percent of the total marks of each subject are from assignments assessed by teachers and checked by external examiners. This includes oral work in languages, fieldwork in geography, laboratory work in the sciences, investigations in mathematics, and artistic performances (up to 50 percent).
Assessment of the students and the award of marks in the IB Diploma is criterion-referenced. Students obtain the marks as long as they demonstrate the knowledge and skills required for the particular mark band. The final grade awarded is not norm-referenced. It is thus not adjusted according to the performance of other students in the same assessment period.
The IB Points System
Student attainment in each IB subject is graded on a 7-point scale from 1 (lowest) to 7 (highest). All six subjects have same weightage in IB score calculation. Students can also be awarded up to 3 additional points for their combined attainment in Theory of Knowledge (TOK) and the Extended Essay (EE).
The highest total score a student can be awarded is 45 points, and the diploma is awarded to students who gain at least 24 points*, with satisfactory participation in CAS (subject to certain minimum levels of performance across the whole diploma).
Example of Subject Options and Scores
|Student A||Scores||Student B||Scores|
|HL Chemistry||7||HL English A: Literature||7|
|HL Biology||7||HL Economics||6|
|HL Mathematics||7||HL Visual Art||7|
|SL Malay B||7||SL French Ab Initio||6|
|SL Geography||7||SL Mathematics Studies||7|
|SL English A: Lang & Lit||7||SL Chemistry||6|
|Academic IB Points||42||Academic IB Points||39|
|Theory of Knowledge||A||Theory of Knowledge||B|
|Extended Essay||B||Extended Essay||B|
|Creativity, Action, Service||P||Creativity, Action, Service||P|
|Additional IB Points||3||Additional IB Points||2|
|Total IB Points||45||Total IB Points||