STAR County Summary Report

State:	California
County:	CONTRA COSTA	County Code:	07	Total Enrollment Reported:	116,333
				Total Number Tested:	110,948
				Total LEP Tested:	9,180

STAR County Summary Report for All Students
Spring, 1998
Grades
	2	3	4	5	6	7	8	9	10	11
Total Reading	N= 11313	N= 11102	N= 10883	N= 10689	N= 10704	N= 10655	N= 10286	N= 10320	N= 9469	N= 7802
NPR for "Avg." Student Score	50	50	54	55	55	54	56	46	43	47
% Scoring Above 75th NPR	27	28	32	32	32	31	29	21	21	25
% Scoring At or Above 50th NPR	52	52	54	56	56	56	60	48	44	47
% Scoring Above 25th NPR	71	72	74	76	77	77	80	72	67	72
Mean Scaled Score	582.3	615.3	642.2	658.4	667.7	683.3	696.0	696.6	700.6	707.1
Total Math	N= 11980	N= 11284	N= 11216	N= 10901	N= 10824	N= 10709	N= 10346	N= 10400	N= 9508	N= 7791
NPR for "Avg." Student Score	48	48	49	51	55	55	55	61	54	56
% Scoring Above 75th NPR	25	25	28	28	31	29	29	33	28	31
% Scoring At or Above 50th NPR	49	48	51	51	54	53	54	60	54	54
% Scoring Above 25th NPR	71	70	71	70	74	73	73	79	76	74
Mean Scaled Score	569.2	596.7	623.0	647.2	663.3	677.2	687.0	699.2	704.6	709.5
Language	N= 11763	N= 11021	N= 11075	N= 10768	N= 10736	N= 10574	N= 10275	N= 10263	N= 9367	N= 7704
NPR for "Avg." Student Score	52	50	56	57	56	60	58	59	49	54
% Scoring Above 75th NPR	33	25	31	34	34	39	33	31	25	27
% Scoring At or Above 50th NPR	54	51	58	60	57	61	58	62	51	57
% Scoring Above 25th NPR	69	70	77	76	77	77	77	81	70	77
Mean Scaled Score	591.0	607.8	633.0	647.2	652.0	666.2	672.8	680.5	681.7	688.9
Spelling	N= 11976	N= 11313	N= 11264	N= 10943	N= 10870	N= 10787	N= 10428
NPR for "Avg." Student Score	46	46	50	50	51	52	46
% Scoring Above 75th NPR	19	19	27	29	26	30	21
% Scoring At or Above 50th NPR	47	44	48	52	50	54	44
% Scoring Above 25th NPR	70	72	69	73	72	76	68
Mean Scaled Score	567.1	598.5	626.3	642.1	654.1	667.7	678.4
Science								N= 10367	N= 9407	N= 7767
NPR for "Avg." Student Score								52	54	54
% Scoring Above 75th NPR								22	28	30
% Scoring At or Above 50th NPR								51	56	51
% Scoring Above 25th NPR								81	77	76
Mean Scaled Score								678.7	686.3	690.4
Social Science								N= 10303	N= 9357	N= 7681
NPR for "Avg." Student Score								54	49	64
% Scoring Above 75th NPR								25	28	43
% Scoring At or Above 50th NPR								58	51	65
% Scoring Above 25th NPR								81	71	81
Mean Scaled Score								659.1	660.9	673.5
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STAR County Summary Report for Limited English Proficient Students
Spring, 1998
Grades
	2	3	4	5	6	7	8	9	10	11
Total Reading	N= 1179	N= 1119	N= 1087	N= 892	N= 904	N= 880	N= 720	N= 586	N= 513	N= 368
NPR for "Avg." Student Score	21	17	17	16	18	14	16	12	9	11
% Scoring Above 75th NPR	5	3	4	2	2	2	1	1	1	2
% Scoring At or Above 50th NPR	17	12	11	10	9	7	6	4	4	5
% Scoring Above 25th NPR	36	33	32	30	35	30	30	18	14	19
Mean Scaled Score	546.8	572.3	597.5	614.5	628.6	636.7	650.0	652.5	656.6	664.1
Total Math	N= 1311	N= 1147	N= 1155	N= 945	N= 936	N= 881	N= 724	N= 603	N= 524	N= 368
NPR for "Avg." Student Score	26	24	21	21	24	22	24	29	29	29
% Scoring Above 75th NPR	9	8	6	5	6	5	6	5	7	12
% Scoring At or Above 50th NPR	24	19	17	19	18	15	15	20	22	23
% Scoring Above 25th NPR	48	43	37	37	39	37	35	49	51	43
Mean Scaled Score	546.2	569.8	591.8	616.6	629.6	643.8	654.5	668.7	680.8	684.1
Language	N= 1269	N= 1109	N= 1115	N= 921	N= 900	N= 839	N= 701	N= 585	N= 506	N= 353
NPR for "Avg." Student Score	20	20	26	23	24	21	19	25	14	18
% Scoring Above 75th NPR	8	4	6	5	5	4	2	2	3	3
% Scoring At or Above 50th NPR	19	16	22	19	17	18	12	16	8	12
% Scoring Above 25th NPR	36	36	45	43	44	39	35	45	24	32
Mean Scaled Score	560.0	574.2	600.1	611.6	620.6	629.7	632.3	644.9	642.3	651.2
Spelling	N= 1303	N= 1148	N= 1161	N= 940	N= 932	N= 885	N= 738
NPR for "Avg." Student Score	24	24	18	20	20	18	16
% Scoring Above 75th NPR	7	7	6	5	6	5	2
% Scoring At or Above 50th NPR	20	21	16	17	16	14	8
% Scoring Above 25th NPR	43	45	36	38	39	37	27
Mean Scaled Score	538.0	572.6	589.9	608.1	618.5	629.2	643.8
Science								N= 596	N= 520	N= 361
NPR for "Avg." Student Score								24	24	23
% Scoring Above 75th NPR								2	4	7
% Scoring At or Above 50th NPR								9	18	16
% Scoring Above 25th NPR								49	42	42
Mean Scaled Score								651.6	659.6	664.2
Social Science								N= 595	N= 516	N= 355
NPR for "Avg." Student Score								24	19	29
% Scoring Above 75th NPR								2	3	12
% Scoring At or Above 50th NPR								17	10	23
% Scoring Above 25th NPR								49	32	49
Mean Scaled Score								633.2	636.6	647.9
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1. NPR stands for National Percentile Rank.
2. The National Percentile Rank is based on the mean NCE score for each group.
3. Mean scaled scores for groups in counties, districts, or schools whose student scores are based on mixed numbers of days of instruction should not be used to compare the performance of one school, district, or county with another.