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原帖由 tillytam 於 11-10-8 16:50 發表 
But I have asked my ex-colleage who is a vice headmaster in a primary school now, she said that the 呈分試 ranking is not counted in standard score. The school will use the 999632 to calculate the total score of every student and then they will know each student's ranking in their school.
Only the PS1 score will be changed in standard score and then the Education Dept will use PS1 standard result to assign the % of band 1, band 2 and band 3 students in their school.
So we don't need to think too complicated, our children 's 呈分試排名 won't be affected by the SD. That is no difference if u add the Magic 10 to Maths or English, of course u won't add to GS or other subjects.
原帖由 tillytam 於 11-10-8 19:57 發表
But the ranking formula of 呈分試 within school has been clearly established among all primary schools. The meaning of 標準化 is 999632, the same as years before when i am still a primary teacher.
You may check with teachers or ED officer and inform me if I am wrong.
Okay, now I have confirmed that you are WRONG !!!
So please pass this information on to your vice headmaster ex-colleague as well.
The standard scores of the students obtained in the internal assessment(校內呈分試) are calculated as the following:-
Raw marks
| 學科 | 中文 | 英文 | 數學 | 常識 | 視藝 | 音樂 | | 學生甲 | 90 | 85 | 90 | 85 | 80 | 75 | | 學生乙 | 80 | 90 | 80 | 90 | 70 | 70 | | 學生丙 | 70 | 60 | 100 | 75 | 80 | 80 |
Standard scores (round to 2 decimal places)
| 學科 | 中文 | 英文 | 數學 | 常識 | 視藝 | 音樂 | | 學生甲 | 1.22 | 0.51 | 0.00 | 0.27 | 0.71 | 0.00 | | 學生乙 | 0.00 | 0.89 | -1.22 | 1.07 | -1.41 | -1.22 | | 學生丙 | -1.22 | -1.40 | 1.22 | -1.34 | 0.71 | 1.22 |
Weighted standard scores (round to 2 decimal places)
| 學科 | 中文 | 英文 | 數學 | 常識 | 視藝 | 音樂 | 比重標準分總和 | | 比重 | * 9 | * 9 | * 9 | * 6 | * 3 | * 2 | | | 學生甲 | 11.02 | 4.57 | 0.00 | 1.60 | 2.12 | 0.00 | 19.32 | | 學生乙 | 0.00 | 8.00 | -11.02 | 6.41 | -4.24 | -2.45 | -3.30 | | 學生丙 | -11.02 | -12.57 | 11.02 | -8.02 | 2.12 | 2.45 | -16.02 |
*因為乘以比重之後才做rounding, 所以數值有些出入, 小數位太多, 這個表顯示出晒界, 好麻煩.
Finally add 150 to the sum of each individual's weighted standard scores
| | 比重標準分總和 | +150 | 學生排名 | | 學生甲 | 19.32 | 169.3 | 1 | | 學生乙 | -3.30 | 146.7 | 2 | | 學生丙 | -16.02 | 134 | 3 |
So one of the major discrepancies of banding forecasting can be well explained.
Since the traditional ranking formula has been clearly established within primary schools, people just suppose the same formula should be applied to the internal assessments(校內呈分試). Unfortunately their "self-generated ranking" is absolutely different from the official one, ha ha... |
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發表於 11-10-11 10:11
for school internal reference only.
