This may be a little helpful for parent considering the better school in their area for their children but this source is from http://www.kiasuparents.com. So just take it as a reference

With this year result, the Primary School that we applied for PV have climbed further up from rank 13 to rank 9. 

"Academic excellence is one of the more important indicators used by parents to measure the quality of schools.  The KiasuParents.com Academic Excellence Ranking for Primary Schools is based on schools with at least 1 student having a T-score of 275 or more points in PSLE from 2000 onwards.  By noting the number of consecutive appearances for each school, we can get a feel for the consistency of the quality of the best students passing out from that school.

Methodology:
The schools score 1 point for every year it graduates any student who scored above 275 for PSLE.  The school also gets an additional 0.1 points for every student that it sends to the list of top 10 national graduates of PSLE.  Schools are further ranked according to the recency of its good performance in PSLE.  The Index is a weighted total of the annual scores, and more recent results are given higher weightage.
We do NOT profess our method to be either definitive or accurate in assessing the relative academic strengths of Primary schools in Singapore.  The best measure should be the total number of passes, weighted with the total number of quality passes across all schools.  In the absence of such data, however, we feel what we have is the best anyone can publicly offer at the moment.
Note that any school with a Index of less than 1 could well be an anomaly, especially if the score was attained several years ago.  On the other hand, schools that consistently managed to churn out students scoring >275 in the last 3 years consecutively probably have a good functioning teaching programme in place.
Not all schools are ranked in this table.  Any school that is not in the list are those that have not produced a student scoring >275 in the last 10 years.

Legend (Top National Student)			Male			Female

School	Index	10	09	08	07	06	05	04	03	02	01
Nanyang Primary	7.2	1.2	1.1	1.4	1.4	1	1.2	1.1	1.2	1.1	1.1
Raffles Girls’ Primary	7	1.1	1.4	1	1	1.2	1.1	1.4	1	1.4	1.3
Rosyth	6.582	1.3	1.1	1.1	1	1.1	1.1	1	1.1	1.1	1.1
Nan Hua Primary	6.536	1	1.2	1.1	1.1	1	1	1.1	1.2	1.3	1
Tao Nan	6.455	1.1	1	1.1	1.3	1	1	1	1.1	1	1.1
St Hilda’s Primary	6.091	1.1	1.1	1.1	1.1	1.1	1	1.1	1.2
Pei Hwa Presbyterian Primary	5.855	1.2	1	1	1	1.1	1	1		1.1	1.1
Henry Park Primary	5.455	1	1	1	1	1.1	1	1			1.1
Rulang Primary	5.345	1	1.1	1	1	1.1	1	1
Catholic High	4.918		1	1.1	1	1.2	1	1		1.1	1.2
Anglo-Chinese School (Primary)	4.645	1.1	1.1	1	1		1	1
Methodist Girls’ School (Primary)	4.527		1	1	1.1	1		1	1	1	1
Ai Tong	4.382		1	1.1	1	1.1		1	1	1.2
Bukit Panjang Primary	4.1		1	1	1	1.1	1		1.1
Red Swastika	4.073	1.1	1		1	1.1		1			1
Maha Bodhi	3.991	1		1.1	1		1.1	1			1.1
Pei Chun Public	3.555	1.1		1	1	1					1
Nan Chiau Primary	3.527	1	1	1	1.1
Chongfu Primary	3.482			1	1	1	1	1		1.1
Kong Hwa	3.055		1	1	1.2			1
Greenridge Primary	2.818		1.1		1	1		1
Maris Stella High	2.818			1	1	1		1			1
Yangzheng Primary	2.727		1	1			1	1
Northland Primary	2.7			1	1	1.1		1
CHIJ St Nicholas Girls’	2.636		1	1					1	1	1
South View Primary	2.636		1.2	1	1
Chua Chu Kang Primary	2.545	1		1	1
Anglo-Chinese School (Junior)	2.536		1	1.1	1
Haig Girls’	2.455		1	1	1
Paya Lebar Methodist Girls’	2.455		1	1	1
White Sands Primary	2.427		1	1		1.1
Si Ling Primary	2.364	1			1	1
River Valley Primary	2.336		1		1	1.1
Yu Neng Primary	2.3			1	1			1		1.1
Unity Primary	2.236		1		1		1.1
Pasir Ris Primary	2.182		1.1		1			1
Qifa Primary	2.182		1.1		1			1
Poi Ching	2.082			1.1	1			1
CHIJ Primary (Toa Payoh)	2			1	1			1
Compassvale Primary	2			1	1			1
Singapore Chinese Girls’ Primary	2			1				1	1	1
Keming Primary	1.918	1.1		1
St Joseph’s Institution Junior	1.918	1.1		1
St Anthony’s Primary	1.845			1	1					1.1
Casuarina Primary	1.818	1		1
Gongshang Primary	1.818		1.2		1
CHIJ Our Lady Queen of Peace	1.727	1			1
Hougang Primary	1.727		1	1
Marymount Convent	1.727		1	1
Woodlands Ring Primary	1.727		1	1
Radin Mas Primary	1.645			1	1
CHIJ Our Lady of the Nativity	1.636		1		1
Concord Primary	1.636		1		1
Shuqun Primary	1.636		1		1
Yew Tee Primary	1.627			1.1	1
West Grove Primary	1.618			1	1.1
East Spring Primary	1.545			1	1
Fairfield Methodist Primary	1.545			1	1
Meridien Primary	1.545		1			1
Ngee Ann Primary	1.545			1	1
Woodgrove Primary	1.545			1	1
Hong Wen	1.455			1		1
Princess Elizabeth Primary	1.364			1			1
Sembawang Primary	1.364				1	1
Yishun Primary	1.364		1					1
Jurong Primary	1.291				1			1
Admiralty Primary	1.273				1		1
De La Salle	1.273				1		1
Xingnan Primary	1.273				1		1
Geylang Methodist School	1.255				1.1			1
Peiying Primary	1.227				1			1.1
Bedok Green Primary	1.182				1			1
Evergreen Primary	1.182				1			1
New Town Primary	1.182				1			1
CHIJ (Katong) Primary	1.1	1.1
Coral Primary	1.1	1.1
St Andrew’s Junior	1.027				1					1.1
St Stephen’s	1.018			1							1.1
CHIJ (Kellock)	1				1					1
Boon Lay Garden Primary	0.909		1
CHIJ Our Lady of Good Counsel	0.909		1
Fengshan Primary	0.909		1
Gan Eng Seng Primary	0.909		1
Qihua Primary	0.909		1
Yio Chu Kang Primary	0.909		1
Elias Park Primary	0.9			1.1
Edgefield Primary	0.818			1
Fuchun Primary	0.818			1
Greenwood Primary	0.818			1
Kuo Chuan Presbyterian Primary	0.818			1
Rivervale Primary	0.818			1
Temasek Primary	0.818			1
Townsville Primary	0.818			1
Yumin Primary	0.818			1
Canossa Convent Primary	0.8				1.1
Bukit View Primary	0.727				1
Clementi Primary	0.727				1
Corporation Primary	0.727				1
Holy Innocents’ Primary	0.727				1
Juying Primary	0.727				1
Lianhua Primary	0.727				1
Queenstown Primary	0.727				1
Tampines North Primary	0.727				1
Tanjong Katong Primary	0.727				1
Woodlands Primary	0.727				1
Xinghua Primary	0.727				1
Xinmin Primary	0.727				1
Zhenghua Primary	0.727				1
Tampines Primary	0.7					1.1
Anderson Primary	0.636					1
Jing Shan Primary	0.636					1
Telok Kurau Primary	0.636					1
Chongzheng Primary	0.545						1
St Anthony’s Canossian Primary	0.545						1
West View Primary	0.545						1
Seng Kang Primary	0.5							1.1
Ang Mo Kio Primary	0.455							1
Dazhong Primary	0.455							1
Farrer Park Primary	0.455							1
Jurong West Primary	0.455							1
Mayflower Primary	0.455							1
Montfort Junior	0.455							1
Opera Estate Primary	0.455							1
Teck Whye Primary	0.455							1
Yuhua Primary	0.455							1
Guangyang Primary	0.4								1.1
Jiemin Primary	0.2										1.1

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