Ezequiel Tafoya Alvarado Academy: english

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.

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	41,249	2353.2	− 2432	−78.8	× 49 / 240	−16.1
4	41,251	2392.5	− 2473	−80.5	× 47 / 240	−15.8
5	41,254	2439.0	− 2502	−63	× 40 / 240	−10.5
6	41,255	2513.7	− 2531	−17.3	× 43 / 240	−3.1
7	41,258	2537.1	− 2552	−14.9	× 34 / 240	−2.1
8	41,259	2542.6	− 2567	−24.4	× 27 / 240	−2.7
Sum, rounded to a whole point						−50

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,155	2380.1	− 2432	−51.9	× 61 / 288	−11
4	38,156	2408.4	− 2473	−64.6	× 58 / 288	−13
5	38,158	2445.6	− 2502	−56.4	× 52 / 288	−10.2
6	38,160	2503.1	− 2531	−27.9	× 41 / 288	−4
7	38,163	2535.1	− 2552	−16.9	× 41 / 288	−2.4
8	38,164	2555.3	− 2567	−11.7	× 35 / 288	−1.4
Sum, rounded to a whole point						−42

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,061	2355.1	− 2432	−76.9	× 62 / 339	−14.1
4	39,062	2407.1	− 2473	−65.9	× 60 / 339	−11.7
5	39,064	2448.3	− 2502	−53.7	× 60 / 339	−9.5
6	39,066	2468.1	− 2531	−62.9	× 61 / 339	−11.3
7	39,068	2497.6	− 2552	−54.4	× 55 / 339	−8.8
8	39,071	2544.5	− 2567	−22.5	× 41 / 339	−2.7
Sum, rounded to a whole point						−58

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,082	2381.6	− 2432	−50.4	× 57 / 353	−8.1
4	39,083	2410.2	− 2473	−62.8	× 60 / 353	−10.7
5	39,086	2470.7	− 2502	−31.3	× 62 / 353	−5.5
6	39,087	2484.1	− 2531	−46.9	× 62 / 353	−8.2
7	39,090	2490.2	− 2552	−61.8	× 60 / 353	−10.5
8	39,091	2553.2	− 2567	−13.8	× 52 / 353	−2
Sum, rounded to a whole point						−45

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,221	2379.1	− 2432	−52.9	× 62 / 365	−9
4	39,222	2407.5	− 2473	−65.5	× 61 / 365	−10.9
5	39,223	2440.5	− 2502	−61.5	× 57 / 365	−9.6
6	39,224	2488.0	− 2531	−43	× 66 / 365	−7.8
7	39,225	2511.5	− 2552	−40.5	× 60 / 365	−6.7
8	39,226	2502.7	− 2567	−64.3	× 59 / 365	−10.4
Sum, rounded to a whole point						−54

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,984	2348.6	− 2432	−83.4	× 81 / 397	−17
4	38,985	2397.5	− 2473	−75.5	× 69 / 397	−13.1
5	38,986	2447.8	− 2502	−54.2	× 77 / 397	−10.5
6	38,987	2476.5	− 2531	−54.5	× 58 / 397	−8
7	38,988	2507.4	− 2552	−44.6	× 57 / 397	−6.4
8	38,989	2520.1	− 2567	−46.9	× 55 / 397	−6.5
Sum, rounded to a whole point						−62

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,037	2355.2	− 2432	−76.8	× 84 / 436	−14.8
4	39,038	2382.7	− 2473	−90.3	× 82 / 436	−17
5	39,039	2415.7	− 2502	−86.3	× 73 / 436	−14.4
6	39,040	2457.0	− 2531	−74	× 86 / 436	−14.6
7	39,041	2509.7	− 2552	−42.3	× 55 / 436	−5.3
8	39,042	2528.4	− 2567	−38.6	× 56 / 436	−5
Sum, rounded to a whole point						−71

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,865	2369.1	− 2432	−62.9	× 76 / 451	−10.6
4	38,866	2376.1	− 2473	−96.9	× 82 / 451	−17.6
5	38,867	2426.0	− 2502	−76	× 82 / 451	−13.8
6	38,868	2458.1	− 2531	−72.9	× 75 / 451	−12.1
7	38,869	2484.4	− 2552	−67.6	× 83 / 451	−12.4
8	38,870	2512.5	− 2567	−54.5	× 53 / 451	−6.4
Sum, rounded to a whole point						−73

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,636	2381.9	− 2432	−50.1	× 72 / 468	−7.7
4	38,637	2405.7	− 2473	−67.3	× 78 / 468	−11.2
5	38,638	2432.9	− 2502	−69.1	× 83 / 468	−12.3
6	38,639	2460.6	− 2531	−70.4	× 83 / 468	−12.5
7	38,640	2499.5	− 2552	−52.5	× 74 / 468	−8.3
8	38,641	2508.1	− 2567	−58.9	× 78 / 468	−9.8
Sum, rounded to a whole point						−62

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −50, −42, −58, −45, −54, −62, −71, −73, −62 → −57.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 16 · 2017→2018: 13 · 2018→2019: 9 · 2019→2022: 8 · 2022→2023: 9 · 2023→2024: 2 · 2024→2025: 11 → average 9.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.5 × 2.66 = 25.3. Upper limit −32.1, lower limit −82.7.

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.