Your Marks An explanation for TEE students

1"Your Marks" Presentation, 28 June 1998

Your MarksAn explanation for TEE students



ScaledMark

SchoolMark

TEEMark

These are the marksyou get on yourStatement of Results



ScaledMark

SchoolMark

TEEMark

Standardised

This slide, and the next four,show the processesused to adjust marks.



ScaledMark

SchoolMark

Moderated

TEEMark

Standardised



ScaledMark

SchoolMark Moderated Standardised

TEEMark

Standardised



ScaledMark


TEEMark

Standardised

CombinedMark

50%

50%



ScaledMark


TEEMark

Standardised

CombinedMark

50%

50%

“Scaling” refers tothis final step, notthe whole sequence.


Entry to University is competitive.

We make the competition as fairas possible.


Why Standardise?

A level playing field?


Within a given subject, TEE papers vary in difficultyfrom year to year. In a year when the paper was harderthan usual, marks would be lower than usual.

Standardisation ensures that students whose papers areharder than usual are not disadvantaged.


Why Standardise?

The information below comes from the results of the 1997 TEE

AVERAGE MARKS Raw TEE

Subject A 65Subject B 53 In Subject A, students

found it easier to get marks than in Subject B.


Why Standardise?

The information below comes from the results of the 1997 TEE

AVERAGE MARKS Raw TEE Std. TEE

Subject A 65 58Subject B 53 58

Standardising ensures that students whotook the easier exam are not advantaged

Raw TEE marks are standardised to the same distribution,in every subject.


As a general rule, if a TEE paper is harder than usualstandardising will adjust the marks upwards. If a TEEpaper is easier than usual, standardising will adjustmarks downwards.

The next slide shows the effect of standardisation onthe 1997 English TEE marks. This paper was harderthan usual.


Effect of StandardisationEnglish TEE, 1997

0

200

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1-5

6-1

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11-1

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16

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-35

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-65

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-75

76

-80

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86

-90

91

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96

-10

0

MARK

FR

EQ

UE

NC

Y

raw TEE stand.TEE


Why Moderate?

Students taking the same subject in differentschools are assessed with different tests andexams. Moderation ensures that no student isunfairly disadvantaged by hard tests and exams.


Why Moderate?

The information below relates to the Year 12 Chemistry results of two schools in 1997.

Average School Mark

School A 65School B 75

It looks as if students inSchool B are 10 marksbetter than those in School A.

Are they really? Or are easiertests and exams in School Bjust making them appear better?


Higher marks could be due to the use of easier testsand exams. But alternatively, the students with highermarks might really have achieved more.

One way to settle the question is to give both groupsof students the same exam. If one group really is better,this should be apparent in the results in a common exam.

The TEE is a common exam for both groups of students.


Why Moderate?


Average Average School Standardised Mark TEE

School A 65 65 School B 75 65

It can now be seen thatthe two groups of students are of equalability, on average.


Why Moderate?


Average Average Average School Standardised Effect of Mark TEE Moderation

School A 65 65 0School B 75 65 -10


In the previous example, the school marks (not the TEE marks)of students in School B are adjusted down by 10 marks, onaverage.

School marks of students in School A are on the same scaleas their standardised TEE; they need no adjustment.

Moderation also involves adjusting the spread of school marksso that they match the distribution of students’ standardisedTEE marks.

Standardised TEE marks are the common scale onto whichschool marks are adjusted.


Why Scale?

If the athlete clears the higher bar (left) he is more successful.However, the risk of failure is less if he attempts the lowerbar (right). How should he decide which goal to attempt?


It might be thought that students choosing TEE subjectsface the same dilemma as the high jumper. Should theychoose hard subjects and risk failure, or is it better toplay safe by choosing easy subjects?

The scaling procedure eliminates this problem and isdesigned to treat students fairly, whether they choose easy or difficult subjects.


Why Scale?

• If marks were not scaled, students would be disadvantaged by choosing challenging subjects.

• In principle, if other factors can be ignored, a student of a given ability should get the same scaled mark whatever subject he/she decides to take.


AVERAGE MARKS SCALING (AMS)

•AMS calculates a scaling graph for each subject, using only the results of students in the scaling population in the current year.

•After scaling, the ranking of students is the same as before.

•Subjects in which the average ability of students is high tend to be scaled up.


AMS Scaling Population The scaling graphs are based on the results of all

students with FOUR or more combined marks, not counting the results of background candidates in French, German and Italian.

After the scaling graphs have been constructed, they are used to scale ALL students’ combined marks. This includes students who are not in the scaling population.


A Scaling Graph

0 10 20 30 40 50 60 70 80 90 100

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0

Combined Marks

Sca

led

Mar

ks

This graph relates combined marks to scaled marks.


A Scaling Graph

0 10 20 30 40 50 60 70 80 90 100

1020

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90

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0

Combined Marks

Sca

led

Mar

ks

For example, let us scale a combined mark of 65.


A Scaling Graph

0 10 20 30 40 50 60 70 80 90 100

1020

30

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70

80

90

100

0

Combined Marks

Sca

led

Mar

ks

In this example, a scaled mark of 69 is obtained.



ScaledMark


TEEMark

Standardised

CombinedMark

50%

50%

How all theprocesses fittogether.


THE END

Documents

Your Marks An explanation for TEE students