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PLEASE view the interview by the Ministry of Education on the process of how students are placed. Even if your child makes the composite score for a school, there may be a chance that places in the school were filled with children whose first choice was that school and/or composite score was higher, before your child’s composite score was reached.
Calculating the Weighted Composite Scores for SEA:
Firstly the student’s standard scores are calculated for Math, ELA and CW. This is done by using the formula:
100 + 15 Zi where,
Zi = Xi – x / S
Zi =xi – x / S
In order to calculate Zi, the following values must be known:
xi = student’s individual raw score
x = the population mean for the subject area (which changes every year and is different for each subject area)
S = the standard deviation for the subject area (which changes every year and is different for each subject area)
So, a standard score is calculated for Math, ELA and CW. Then, the scores are weighted as follows:
Math wt = 100% of the calculated Math standard score
ELA wt = 60% of the calculated ELA standard score
CW wt = 40% of the calculated CW (ie, the ELA writing) standard score.
The weighted composite score = Maths wt + ELA wt + CW wt
Using fictitious values for the “Means” and “Standard deviations” we have examples of how the composite scores are calculated.