The O'Farrell Charter: math

The shaded band is this school's normal range. If nothing about how it works changes, nearly every future year should land inside it. Zero means the typical student just meets the state standard. The small numbers under the years are how many students were tested.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 11.

All students

3rd The average 3rd grader meets the grade 3 bar. 2460 vs. 2436.
4th The average 4th grader scores just under the grade 4 bar. 2483 vs. 2485.
5th The average 5th grader scores 13 points under the grade 5 bar. 2515 vs. 2528.
6th The average 6th grader scores 18 points under the grade 5 bar. 2511 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores just under the grade 5 bar. 2524 vs. 2528. The 7th-grade bar is 2567.
8th The average 8th grader scores 14 points under the grade 7 bar. 2553 vs. 2567. The 8th-grade bar is 2586.
11th The average 11th grader scores 28 points under the grade 11 bar. 2600 vs. 2628.

Students fluent in English

Math with English out of the way. Includes students who have only ever spoken English.

Grade bars 3rd 56 students Meets the grade 3 bar. 4th 84 students Meets the grade 4 bar. 5th 86 students Meets the grade 5 bar. 6th 185 students Just under the grade 5 bar. 7th 188 students 20 points under the grade 6 bar. 8th 182 students 16 points under the grade 8 bar.

English learners

Students leave this group as they become fluent, so its average stays low even where they learn well.

Grade bars 3rd 22 students 31 points under the grade 3 bar. 4th 16 students 43 points under the grade 4 bar. 5th 19 students Just under the grade 3 bar. 6th 21 students 40 points under the grade 3 bar. 7th 13 students 40 points under the grade 3 bar. 8th 17 students 59 points under the grade 3 bar.

the group's average that grade's own bar the distance between

2026 results. "Meets standard" is the state's mark for being on track for that grade. The state leaves out any group of ten students or fewer, so a grade may be missing from the charts.

Step 1 · Each year's result

For each grade tested, take the average (mean) scale score from the California Department of Education's results file, and subtract the lowest score that counts as "Standard Met" for that grade. That is the grade's distance from standard. Weight each grade by its share of the students tested, then add the grades up. Grades where the state hides the average because ten or fewer students tested are left out entirely.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,886	2396.5	− 2436	−39.5	× 49 / 984	−2
4	74,889	2443.0	− 2485	−42	× 56 / 984	−2.4
5	74,890	2468.4	− 2528	−59.6	× 57 / 984	−3.5
6	74,893	2529.3	− 2552	−22.7	× 252 / 984	−5.8
7	74,894	2536.1	− 2567	−30.9	× 228 / 984	−7.2
8	74,897	2582.4	− 2586	−3.6	× 249 / 984	−0.9
11	74,898	2609.2	− 2628	−18.8	× 93 / 984	−1.8
Sum, rounded to a whole point						−23

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,588	2421.8	− 2436	−14.2	× 47 / 980	−0.7
4	69,590	2453.5	− 2485	−31.5	× 62 / 980	−2
5	69,593	2492.5	− 2528	−35.5	× 57 / 980	−2.1
6	69,594	2499.5	− 2552	−52.5	× 220 / 980	−11.8
7	69,597	2548.7	− 2567	−18.3	× 269 / 980	−5
8	69,599	2566.9	− 2586	−19.1	× 239 / 980	−4.7
11	69,601	2617.0	− 2628	−11	× 86 / 980	−1
Sum, rounded to a whole point						−27

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,422	2453.2	− 2436	17.2	× 51 / 1068	0.8
4	71,423	2436.2	− 2485	−48.8	× 56 / 1068	−2.6
5	71,425	2472.5	− 2528	−55.5	× 80 / 1068	−4.2
6	71,428	2498.2	− 2552	−53.8	× 276 / 1068	−13.9
7	71,429	2521.9	− 2567	−45.1	× 228 / 1068	−9.6
8	71,432	2554.2	− 2586	−31.8	× 261 / 1068	−7.8
11	71,433	2606.7	− 2628	−21.3	× 116 / 1068	−2.3
Sum, rounded to a whole point						−40

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,567	2452.2	− 2436	16.2	× 73 / 1085	1.1
4	71,568	2472.5	− 2485	−12.5	× 79 / 1085	−0.9
5	71,571	2473.3	− 2528	−54.7	× 80 / 1085	−4
6	71,572	2508.7	− 2552	−43.3	× 270 / 1085	−10.8
7	71,575	2541.4	− 2567	−25.6	× 247 / 1085	−5.8
8	71,576	2543.3	− 2586	−42.7	× 211 / 1085	−8.3
11	71,579	2637.3	− 2628	9.3	× 125 / 1085	1.1
Sum, rounded to a whole point						−28

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,056	2462.8	− 2436	26.8	× 76 / 1124	1.8
4	72,057	2490.0	− 2485	5	× 82 / 1124	0.4
5	72,058	2501.8	− 2528	−26.2	× 99 / 1124	−2.3
6	72,059	2519.7	− 2552	−32.3	× 256 / 1124	−7.4
7	72,060	2542.1	− 2567	−24.9	× 254 / 1124	−5.6
8	72,061	2550.5	− 2586	−35.5	× 235 / 1124	−7.4
11	72,062	2610.0	− 2628	−18	× 122 / 1124	−2
Sum, rounded to a whole point						−22

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,146	2473.3	− 2436	37.3	× 78 / 1114	2.6
4	72,147	2463.9	− 2485	−21.1	× 79 / 1114	−1.5
5	72,148	2480.4	− 2528	−47.6	× 88 / 1114	−3.8
6	72,149	2485.8	− 2552	−66.2	× 218 / 1114	−13
7	72,150	2528.4	− 2567	−38.6	× 254 / 1114	−8.8
8	72,151	2522.2	− 2586	−63.8	× 261 / 1114	−14.9
11	72,152	2588.9	− 2628	−39.1	× 136 / 1114	−4.8
Sum, rounded to a whole point						−44

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,140	2450.1	− 2436	14.1	× 74 / 1045	1
4	72,141	2514.9	− 2485	29.9	× 75 / 1045	2.1
5	72,142	2473.6	− 2528	−54.4	× 101 / 1045	−5.3
6	72,143	2509.5	− 2552	−42.5	× 211 / 1045	−8.6
7	72,144	2510.3	− 2567	−56.7	× 210 / 1045	−11.4
8	72,145	2545.1	− 2586	−40.9	× 249 / 1045	−9.7
11	72,146	2562.1	− 2628	−65.9	× 125 / 1045	−7.9
Sum, rounded to a whole point						−40

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,122	2479.4	− 2436	43.4	× 75 / 1052	3.1
4	72,123	2474.7	− 2485	−10.3	× 103 / 1052	−1
5	72,124	2519.7	− 2528	−8.3	× 108 / 1052	−0.9
6	72,125	2501.3	− 2552	−50.7	× 216 / 1052	−10.4
7	72,126	2540.8	− 2567	−26.2	× 204 / 1052	−5.1
8	72,127	2530.5	− 2586	−55.5	× 209 / 1052	−11
11	72,128	2585.9	− 2628	−42.1	× 137 / 1052	−5.5
Sum, rounded to a whole point						−31

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,838	2457.5	− 2436	21.5	× 76 / 1053	1.6
4	71,839	2478.8	− 2485	−6.2	× 101 / 1053	−0.6
5	71,840	2506.9	− 2528	−21.1	× 104 / 1053	−2.1
6	71,841	2513.4	− 2552	−38.6	× 206 / 1053	−7.6
7	71,842	2533.3	− 2567	−33.7	× 212 / 1053	−6.8
8	71,843	2543.2	− 2586	−42.8	× 189 / 1053	−7.7
11	71,844	2587.0	− 2628	−41	× 165 / 1053	−6.4
Sum, rounded to a whole point						−30

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,861	2459.9	− 2436	23.9	× 78 / 1047	1.8
4	71,862	2482.5	− 2485	−2.5	× 100 / 1047	−0.2
5	71,863	2515.1	− 2528	−12.9	× 105 / 1047	−1.3
6	71,864	2510.5	− 2552	−41.5	× 206 / 1047	−8.2
7	71,865	2523.5	− 2567	−43.5	× 201 / 1047	−8.4
8	71,866	2553.2	− 2586	−32.8	× 199 / 1047	−6.2
11	71,867	2599.7	− 2628	−28.3	× 158 / 1047	−4.3
Sum, rounded to a whole point						−27

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −23, −27, −40, −28, −22, −44, −40, −31, −30, −27 → −31.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 13 · 2017→2018: 12 · 2018→2019: 6 · 2019→2022: 22 · 2022→2023: 4 · 2023→2024: 9 · 2024→2025: 1 · 2025→2026: 3 → average 8.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.2 × 2.66 = 21.8. Upper limit −9.4, lower limit −53.

Why 2.66? It is the standard factor from quality control, the work of Walter Shewhart and W. Edwards Deming. It turns "how much the result typically changes in a year" into "how far it can wander by chance alone".

Years with no result (no state tests were given in spring 2020) are skipped: the year-to-year change runs from the last year with a result to the next one.

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.