Transcript No Slide Title

GCSE and IGCSE –
different but equal?
Neil Defty & Nicola Forster
Secondary Systems Programme Managers
London, January 2012
Comparing GCSE grading with IGCSE
grading…
Note: not comparing course content - purely looking at
how pupils typically perform in GCSEs and
IGCSEs, compared to their underlying ability
The theory
Trend segments (mean +/-1 standard deviation)
GCSE point score (A*=8, A=7, B=6, …)
8
7
6
5
4
Trend segment for exam X
3
Trend segment for exam Y
2
1
30
40
50
60
Baseline Test Score (% )
70
80
90
The 2009 analysis
Trend segments for 2009 GCSEs: drawn over 68% of Yellis intake
(mean +/-1 standard deviation)
GCSE point score (A*=8, A=7, B=6, …)
8
7
6
5
English GCSE
English IGCSE
4
Eng Lit GCSE
Eng Lit IGCSE
3
Maths GCSE
Maths IGCSE
2
1
30
40
50
60
Yellis Test Score (%)
70
80
90
But what about the differences in
grading between the Exam Boards?
Maths analysis by Board
Trend segments for 2009 Maths GCSEs/IGCSEs: drawn over 68% of Yellis
intake (mean +/-1 standard deviation)
GCSE point score (A*=8, A=7, B=6, …)
8
7
6
5
4
Maths GCSE
Board X Maths IGCSE
3
Board Y Maths IGCSE
2
1
30
40
50
60
Yellis Test Score (%)
70
80
90
But what about the skewed sample?
OK, let’s look at Independent schools only…
The 2009 analysis again
Trend segments for 2009 GCSEs: drawn over 68% of Yellis intake
(mean +/-1 standard deviation) - Independent schools only
GCSE point score (A*=8, A=7, B=6, …)
8
7
6
5
English GCSE
English IGCSE
4
Eng Lit GCSE
Eng Lit IGCSE
3
Maths GCSE
Maths IGCSE
2
1
30
40
50
60
Yellis Test Score (%)
70
80
90
Maths analysis by Board again
Trend segments for 2009 GCSEs: drawn over 68% of Yellis intake
(mean +/-1 standard deviation) - Independent schools only
GCSE point score (A*=8, A=7, B=6, …)
8
7
6
5
4
Board Y Maths IGCSE
Board X Maths IGCSE
Maths GCSE
3
Maths IGCSE
2
1
30
40
50
60
Yellis Test Score (%)
70
80
90
The future…
Increased take-up of IGCSEs should allow us
to investigate these differences in more
depth – and more importantly be able to
provide separate GCSE/IGCSE predictions
and Value Added analyses as part of our
monitoring systems’ feedback