WELCOME
Presentation slides can be downloaded from:
http://www.rivervalleypri.moe.edu.sg
River Valley Primary School – Strive for the Best
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
OUTLINE
•
PSLE is a placement exam
•
What is the PSLE Aggregate SCORE?
•
Why is T-Score used?
•
Definition & Calculation of T-Score
•
Questions about T-Score
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
PSLE - a placement exam
•
Need to reflect the relative
achievement level of pupils within their
peers.
•
Places pupils into different courses
according to their academic ability
•
Enables posting to secondary schools
by merit and as far as possible into a
school of their choice.
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
What is PSLE Aggregate Score?
It is a sum of scores.
What are these
scores?
Are they
raw
scores?
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
The PSLE Aggregate Score
• incorporates performance
of pupils in all 4 subjects
• allows pupils to be ranked
fairly
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Can raw scores be used?
NO !
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Why Not?
•
Different subjects have different
levels of difficulty
•
So are the spread of marks from
the average mark, i.e. the
standard deviation
(spread = standard deviation)
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
MEASURE OF
S P R E A D
Narrow
Wide
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
HURRAY!
DOLLY
I scored 85% in
both English
and Mother
Tongue !
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Dolly scores 85% in both EL and MT
Her performance in MT is very
close to that of other pupils
85%
She did much better
in EL as compared to
other pupils
EL
MT
0
100
EL ave
= 60
MT ave
= 80
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
A need for standardisation of
the raw scores
Transformed Score
or T-Score
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
T-Score
EL
MT
85%
85%
ave = 80
ave = 60
50
T-Score converts average mark of each subject
to a common score of 50 points. It also converts
other marks taking into consideration the extent
to which they differ from the average and the
size of spread of the marks around the average
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
What is T-Score?
• It gives the relative position of a
pupil’s performance as compared
to the performance of all the other
pupils in that subject
• The raw mark obtained in the exam
only shows how good the pupil is in
that subject, not how good he is as
compared to others
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
How is T-Score calculated for
each subject?
(X
Y)
T = 50 + 10
Z
where
X: pupil’s mark for the subject
Y: average mark (mean) scored by all
pupils
Z: spread of marks around the average
mark (standard deviation)
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Example:
• Pupil’s mark (X) in exam
= 50.0
• Average mark (Y) scored by
all pupils
= 68.0
• Spread of marks (Z) around the
average mark (Y)
= 14.0
T = 50 + 10 (50 - 68.0)
14.0
= 37.14
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
How is the Aggregate
Score calculated?
By adding the T-Scores of
the 4 subjects
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Example:
Subject
Total
Mark
T-Score
EL1
200
105
34
CL2
200
152
51
Maths
100
67
53
Science
100
58
47
Aggregate: 185
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Finally,
all pupils are ranked
according to their Aggregate
Scores
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
T-SCORES & GRADES:
Is it possible for a pupil with
3A* and 1A to be ranked lower
than another pupil who has
only 1A* and 3As?
Yes, it is possible
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Subj
John’s
Susan’s
Mark
TMark
T(Grade) Score (Grade) Score
EL1
MT
MA
SC
182
A
185
A*
91
A*
92
A*
60
70
60
56
Aggregate T-Score:
190
A*
180
A
80
A
86
A
246
68
68
58
55
249
River Valley Primary School – Strive for the Best
PSLE
SEMINAR
Expected Aggregate Score
by Class 2010
6 Honesty
6 Kindness
6 Patience
6 Confidence
6 Diligence
6 Endurance
6 Friendship
6 Graciousness
Aggregate Score
255
245
235
200- 210
200- 210
200- 210
200- 210
200- 210
River Valley Primary School – Strive for the Best
Estimation of Aggregate Score
50 X4= 200
200X 0.85=170
200X 0.8 = 160
60 X 4= 240
240 X 0.85 = 204
240 X 0.8 = 192
80 x 4=320
320X 0.8=256
320X 0.75= 240
River Valley Primary School – Strive for the Best
Average of 4 Subjects
Possible Aggregate Score
80 & Above
250- 280
75
230- 245
70
215- 220
60
200
50
180
River Valley Primary School – Strive for the Best
Home Support
 GROW ME Model
 Encouragement
 Standards of literacy and numeracy
River Valley Primary School – Strive for the Best
River Valley Primary School – Strive for the Best