We will be using the same normalisation method as last year. This is a scientific method. Raw marks are available in the shift where the student has written the test, and interpolated marks are estimated in the other shift because the student could not have written the test for a second time in the same subject. For each student, we then calculate the average of the actual raw marks in one shift and the marks obtained using interpolation in the other shift. This method is accurate for estimating the normalised marks of candidates when the tests are held in multiple sessions with varying difficulty levels in a given subject. Since we are considering the difficulty levels across different days and normalising them, there will be a difference between the raw marks obtained by the student and the normalised score.