As you can see on the graph in the preceding section, our previous best percentage of students who achieved 5 or more A*-C grades was two years ago, when 44% of all grade awarded were A* or A. The photo above, from the Newsletter two years ago, shows many of the 23 students in last year’s Year 13 who achieved an average grade of an A or better in their (I)GCSEs two years ago, so we have always known that this year’s IBDP results would be excellent.
As all IBDP students complete coursework (IAs - Internal Assessments) in every subject, the IB was able to use these as an important part of their model, along with predicted grades as used by the (I)GCSE boards. In a usual year, only a selected sample of IAs in each subject is submitted, and then moderated, by the IB, but this year every students’ IA in every subject was submitted and then marked by IB examiners around the world. As the IB explain:
“The awarding model used student coursework, school predicted grades and school context for final grade award. The school context was not based on previous cohorts’ performance, but instead the relationship between predicted grade accuracy, performance in coursework versus examination components and final outcomes.
As is our normal practice, IB assessment specialists, working with a team of international Chief Examiners, applied standards during marking, and awarding to promote fairness. They worked with over 12,000 international examiners who met in over 300 standardization meetings to ensure reliability.
These experienced and trained IB examiners marked more than 920,000 pieces of student coursework - examining all student work, rather than only moderating or sampling, aiming to maximize the confidence that every student will receive a fair mark overall.”
While we were pleased with many aspects of the initial IBDP results, with many of our headline figures being in line with our previous best years, we were very disappointed that the results of our highest prior-attaining students, especially in Maths and Science subjects, were significantly below, to use CAIE’s phrase “the grade that, in the professional opinion of the teacher, the candidate would have been most likely to achieve if the June 2020 exam series had taken place”.
Throughout the summer, Mr Will Taylor (Deputy Head: Senior Studies/IB Diploma Coordinator) has been working both with the IB and with colleagues from other Nord Anglia schools around the world and the Nord Anglia Education Team - NAE is one of the largest groups of IBDP schools in the world - to submit both appeals on behalf of individual students and requests for reviews for all students taking a particular subject where this was appropriate.
These review requests, and those from 700 other schools, persuaded the IB to make a significant adjustment to their model, with final subject results being “adjusted to be equal to the internal assessment (IA) result when the predicted grade was only one grade less, equal to or greater than the IA grade” on Monday last week.
This change, with final grades much better reflecting both our predicted grades and the assessed IAs, has made a significant difference to the IB Diploma Programme points scores of many of last year’s Year 13 students and, while we still have a number of subjects being reviewed, they now much better reflect the excellent IBDP results that we have been expecting for the students in this Year Group for a number of years. The 16 students below all now have current IBDP Points scores of 39 points (out of 45) or more.