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KCPE RESULTS MODERATION PROCESS- You probably must be wondering how standardization of the Kenya Certificate of Primary Education (KCPE) examination results is done. Well. The process of moderating KCPE scores is quite straight forward and well documented.

Standardization of the Kenya Certificate of Primary Education (KCPE) Examination

BACKGROUND

The Kenya Certificate of Primary Education   (KCPE)   examination is primarily a Norm   Referenced (N.R) examination which   compares candidates’   performance to that   of other candidates taking   the examination.

Standardization of raw marks to standard   marks in   the KCPE examination is a   process that involves   adjusting the raw   marks for each paper in the   examination to allow for differences in   difficulty and extent to which marks scatter.

In this process, the difficulty among the   papers is   measured in terms of the mean   raw marks scored by all candidates, while   the differences in scatter are measured in   terms of the standard deviation.

Standardization entails converting the raw   marks of   each paper in the KCPE   examination so that the mean and   standard deviations of each of the papers   are   identical.

For the KCPE examination, the   expected   mean is 50 with a standard deviation of 15   for a paper marked out of 100.

See also: How KCSE results are moderated/ standardized.

FORMULA FOR KCPE STANDARDIZATION STANDARDIZATION

For standardization to a mean of 50 and Standard Deviation of 15 the formula is as follows:

  Where:

  XSD = Standard Scores

  X    = Raw mark obtained by   Candidate

  M   = Mean raw mark

  SD = Standard deviation of raw marks

EXAMPLE ON KCPE STANDARDIZATION IS CARRIED OUT

Examination Raw Paper / Subject Means and Standard Deviations

Paper Name Paper Mean Paper Standard Deviation Subject Mean Subject

Standard Deviation

English Objective 24.56 07.05 99.01 24.76
English Composition 17.08 07.04
Kiswahili Objective 26.38 06.34 99.02 23.93
Kiswahili Insha 20.12 07.36
Mathematics 26.90 10.26 26.90 10.26
Science 29.82 08.94 29.82 08.94
Social Studies 38.96 09.57 58.50 13.48
Religious Education 18.03 04.48

 

Examination Raw Scores for the Five (05) Candidates & Aggregate Scores based on Percentages

Candidate’s Raw Marks total based on % raw marks

(out of 500)

English kiswahili maths scie ssre
 obj. comp. obj. insha ss re
1. 48 37 44 37 50 48 59 25 473
2. 46 39 44 38 49 47 58 27 471
3. 45 37 46 38 49 47 60 24 469
4. 46 35 45 38 50 48 57 25 469
5. 42 38 43 38 49 49 57 28 468

 

Standardised Scores for the  Five (05) Candidates & Aggregate Scores as shown in the previous table.

CANDIDATES’ SUBJECT STANDARDIZED SCORES Total Standardized Score

(out of 500)

English Kiswahili Maths Science SSRE
1. 99 93 83 80 79 434
2. 99 94 82 78 81 434
3. 96 97 82 78 80 433
4. 96 96 83 80 78 433
5. 94 93 82 82 81 432

 

RATIONALE FOR THE   STANDARDIZATION OF   RAW MARKS TO   STANDARD MARKS IN THE   KCPE   EXAMINATION

Standard scores are a measure of relative   performance and have the ability to tell us   how a candidate or a group of candidates have   performed in comparison to other candidates   while raw marks cannot;

Standard scores are essential when results   from different papers must be combined to   give an overall   total, as is the case of the   KCPE examination. Standard scores are useful   for comparing relative performance of a   candidate or group of candidates from subject   to subject and from year to year.

Once the raw marks have been   standardized,   the cut-off marks for all   grades from Grade A to Grade E   are identical for all subjects and   are   the same from year to year.

When scores are standardized, the   relative positions   of candidates remain   unchanged, the top candidate in each   subject remains at the top;

Standard scores always convey the   relative   performance of a candidate   relative to other   candidates sitting   the same examination;

Standard scores are essential if marks   from several   papers are to be added to   give a total score, and it is   desired   that each paper should contribute   equally to the total score.

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