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Atherwood Elementary · Simi Valley

Atherwood Elementary: This school runs ahead of the state average. The bar itself is the harder conversation.

Atherwood posts 44% meeting the standard against 43% statewide — ahead of most, with real headroom above the bar.

2019–2025 trend · CDE CAASPP
This schoolCA avg
Scope4345
% Exceeded19%21%
% Met+44%43%
Growth+1.4-2.9
Absence15.2%17.9%
Suspension1.3%1.6%
Scope Score
43
🌱 Building Momentum · Developing
ranked #2,822 statewide · #9 of 19 in Simi Valley Unified

Atherwood Elementary scores 43 of 100 on SchoolScope's Scope Score — the 51st percentile of 5,744 California elementary schools (CDE CAASPP 2025).

Measures test performance, attendance, and climate — not arts, community, or your kid. How we score →

🌱 Building Momentum — This label means the data doesn't clearly sort the school one way or the other — ask what the school is proud of, and what it's working on.

Most rating sites would stop at “44% proficient” and call it done. Atherwood deserves a closer read. The school sits in Simi Valley, where one in three students qualify for free or reduced lunch — and reading the numbers without that context misreads the school.

The seven-year arc

Percentile among 5,744 elementary schools statewide

Slipped from the 77th to the 51st percentile since 2019.

CA Dashboard
ELAGreen(Increased Significantly)MathGreen(Increased Significantly)

This school hasn't fully recovered from the pandemic: 44% meet the standard today, versus 63% in 2019 — a gap worth asking about on a visit.

ELA — % met or exceeded, by grade
Grade20192022202320242025
Grade 362%43%43%44%37%
Grade 470%68%35%48%45%
Grade 569%52%74%45%51%
Grade 653%25%33%43%
Math — % met or exceeded, by grade
Grade20192022202320242025
Grade 362%43%54%61%45%
Grade 465%50%33%42%51%
Grade 549%37%50%30%34%
Grade 653%26%19%36%

The story this school is actually telling

The school, grade by grade

ELA · CAASPP 2024–25

Different students, same year — each bar is one grade's proficiency mix.

23%
14%
63%
Grade 3 · 37% proficient
22%
23%
55%
Grade 4 · 45% proficient
25%
26%
49%
Grade 5 · 51% proficient

The honest read: the share exceeding holds steady across grades; the floor rises 13.7pp. The state average rises 4.5pp over the same span. A school visit and conversation with teachers will tell you more than this number.

The 6 things our score weighs

Exceeded standard
18.7%
State 21.3%
2.6pp below state avg
Growth (G3→G5)
+1.4pp
State -2.9pp
Scores improve across grades
Met or exceeded
44.0%
State 42.7%
1.3pp above state avg
Chronic absenteeism
15.2%
State 17.9%
2.7pp below state avg
Suspension rate
1.3%
State 1.6%
0.3pp below state avg
EL proficiency (ELPAC)
25.0%
State 18.0%
7.0pp above state avg
Worth a school visit

Ask how the school challenges kids who clear the standard early. The gap between meeting and exceeding is where pacing shows.

  • Ask whether the tour can step into a working classroom — watch how the teacher handles a student who's stuck.
  • Ask to tour while school's in session, and notice how hallways and transitions feel — culture shows up between classes, not just in them.
  • Ask how the school communicates with families when a child starts to struggle.
  • Ask what a typical day looks like for a new student in the first few weeks.

How every group of students does here

At Atherwood Elementary in Simi Valley, 33.8% of low-income students met or exceeded the ELA standard in 2025, compared to 38.9% district-wide and 38.2% statewide. Atherwood Elementary trails its district average for low-income students by 5.1 percentage points in ELA. Other subgroups: Low-Income students (32.1% Math proficient); White students (45.3% ELA proficient). The largest proficiency gap is 14.3 percentage points for disabilities students. Data source: California Department of Education, CAASPP 2024-25. 77 students tested.

All students at this school: 44% met or exceeded
All StudentsAll Students: this school 44%, district —, state 43%44%
FemaleFemale: this school 40%, district 43%, state 44%40% · −4 vs school
MaleMale: this school 48%, district 44%, state 42%48% · +4 vs school
WhiteWhite: this school 46%, district 50%, state 56%46% · +2 vs school
Hispanic/LatinoHispanic/Latino: this school 36%, district 31%, state 32%36% · −8 vs school
Socioeconomically DisadvantagedSocioeconomically Disadvantaged: this school 33%, district 32%, state 32%33% · −11 vs school
Students with DisabilitiesStudents with Disabilities: this school 29%, district 12%, state 15%29% · −15 vs school

8 of 15 student groups here are too small to report — a privacy protection, not a gap.

this school district, same group California, same group
Subgroup growth by grade

Change in proficiency from the lowest tested grade — which groups gain ground the longer they stay. Groups with fewer than 10 tested students per grade are not shown.

Low-income student ELA proficiency rises by 27.7pp from grade 3 to grade 5 at this school. District average: +6.9pp.

Showing up, and staying in class

Chronic absenteeismChronic absenteeism: this school 15.2%, district 19.5%, state 17.9%15.2% · −2.7pp vs state
Suspension rateSuspension rate: this school 1.3%, district —, state 1.6%1.3% · −0.3pp vs state

TK/K students miss school at roughly one and a half times the rate of Grades 4–6 students (20.4% vs 12.3%). Chronic absence here concentrates in the earliest grades — worth asking how the school works with new families on attendance.

Chronic absenteeism by grade band
Grades 4–612.3%
TK/K20.4%

Where the path goes

The path below follows attendance boundaries — scores shown for each next step.

K-12 Feeder Path

Feeder patterns derived from NCES attendance boundary data. Boundaries are approximate and may have changed — verify with your school district for current assignments.

The people teaching here

Context — never part of the Scope Score
Student : teacherStudent to teacher ratio: this school 22:1, district 23:122:1
Teaching staff25 teachers
Avg. experience13.5 years
Fully credentialed82%
First-year teachers8%
Salary Schedule
Teacher salary schedule$56,887 – $115,704
Principal salary$148,925 – $170,414
Superintendent salary$297,494

Pay is set by the district, not the school.

What gets spent here

Per-pupil spendingPer-pupil spending: $16,197, CA average $14,815$16,197 · spent at this school
Federal share$198 per student

$198 per student arrives as federal Title funding — a measure of concentrated need, not school quality.

District current expense · FY 2024–25$17,900 per student

The district's current expense of education per student, from CDE's annual SACS filing — the freshest district spending figure the state publishes.

Where the district's dollars go · FY 2024–25 · CDE SACS
Instruction57%
Instruction support14%
Student services11%
Administration7%
Buildings & maintenance10%
Other1%

District-level, from the district's own SACS general-ledger filing — school-by-school breakdowns aren't published by the state.

district detail, 2016–2020 — the newest published
2020$12,276 per pupil
2019$11,727 per pupil
2018$11,607 per pupil
2017$10,765 per pupil
2016$10,354 per pupil

Source: NCES F-33 · Full district breakdown →

The neighborhood it serves

White49.1%
District 38.8% · CA 19.9%
Hispanic35.1%
District 45.4% · CA 56.1%
Other8.1%
District 7.0% · CA 9.0%
Asian6.6%
District 7.2% · CA 10.2%
Black1.1%
District 1.6% · CA 4.8%
Low IncomeFree/reduced lunch eligible 33.1% (31pp below CA avg)
Neighborhood — American Community Survey
Median income$121K · CA $85K
Median home value$829K · CA $659K
Bachelor's degree+40% · CA 35%
ZIP population73,534
Median age42 years

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level

Worth Knowing

Transitional kindergarten is offered here — confirmed by actual Census Day enrollment, not just the listed grade span.

On the state's science test (CAST), 38% met or exceeded the standard — science is tested in grades 5 and 8 but never enters the Scope Score.

Frequently asked questions

Is Atherwood Elementary a good elementary school?

Atherwood Elementary has a Scope Score of 43 out of 100, placing it in the 51st percentile of California elementary schools and ranked #2,822 statewide. 18.7% of students exceeded the state standard on the 2025 CAASPP assessment, which is 2.6 percentage points below the California average of 21.3%. The Scope Score weights 6 dimensions for elementary schools: exceeded standard (38%), grade 3-to-5 growth (27%), met or exceeded (proficient) (20%), chronic absenteeism (5%), suspension rate (5%), and ELPAC English Learner proficiency (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.

What are Atherwood Elementary's CAASPP test scores?

On the 2025 CAASPP Smarter Balanced Assessment, 44.0% of students at Atherwood Elementary met or exceeded the state standard in ELA and Math combined, and 18.7% exceeded it. The gap between those numbers matters: 25.3% of students are at the proficiency floor, while 18.7% pushed past it. Most rating sites report only the combined "proficient" number. SchoolScope surfaces the exceeded-vs-met split because it reveals whether a school's curriculum challenges students beyond minimum proficiency or paces toward it. 439 student-subject combinations were assessed.

How does Atherwood Elementary rank in California?

Atherwood Elementary ranks #2,822 among California elementary schools by Scope Score, placing it in the 51st percentile. This ranking is based on a weighted composite of 2025 CAASPP test performance (exceeded and met rates), grade-level growth (Grade 3 to grade 5 growth), chronic absenteeism, and suspension rate. Unlike single-number ratings, the Scope Score shows what drives the ranking so parents can decide what matters most to their family. See full methodology.

Is Atherwood Elementary getting better or worse?

Based on 2025 CAASPP data, proficiency at Atherwood Elementary increases by 1.4 percentage points from Grade 3 to grade 5 growth. This upward trajectory suggests the school is adding measurable value — students leave with higher proficiency rates than they entered with. Growth trajectory is weighted at 15% in the elementary Scope Score because it measures what the school does, not just who walks in the door.

What is the attendance and school culture like at Atherwood Elementary?

15.2% of students at Atherwood Elementary are chronically absent (missing 10% or more of school days), which is better than the California average of 17.9%. The suspension rate is 1.3%, indicating a low-discipline-incident environment. SchoolScope includes these culture metrics in the Scope Score because they reflect day-to-day school experience in ways test scores alone cannot.

How does Atherwood Elementary compare to other schools in Simi Valley?

Atherwood Elementary scores 43/100 (51st percentile) among California elementary schools. To compare with nearby schools, SchoolScope shows the same metrics side by side: exceeded rate, proficiency, growth trajectory, and school culture indicators. The school serves 456 students. Use the schools in Simi Valley page or the map view to compare all elementary schools nearby.

How does Atherwood Elementary serve low-income and underrepresented students?

At Atherwood Elementary in Simi Valley, 33.8% of low-income students met or exceeded the ELA standard in 2025, compared to 38.9% district-wide and 38.2% statewide. Atherwood Elementary trails its district average for low-income students by 5.1 percentage points in ELA. Other subgroups: Low-Income students (32.1% Math proficient); White students (45.3% ELA proficient). The largest proficiency gap is 14.3 percentage points for disabilities students. Data source: California Department of Education, CAASPP 2024-25. 77 students tested. SchoolScope shows disaggregated test scores by demographic subgroup so you can see how a school performs for your child's specific group — not just the school-wide average. Subgroup data is context, not part of the Scope Score: we don't penalize schools for who they serve. See our equity approach.

Your other options

Private alternatives nearby

Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.


For the data nerds

Every number on this page

Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.

01Score factorsWeighted composite · 2024–25
Exceeded standard · 38%
18.7%
↓ vs CA 21.3% · 47th pctile
Growth (G3→G5) · 27%
+1.4pp
↑ vs CA -2.9pp · 44th pctile
Met or exceeded · 20%
44.0%
↑ vs CA 42.7% · 51th pctile
Chronic absenteeism · 5%
15.2%
↑ vs CA 17.9% · 54th pctile
Suspension rate · 5%
1.3%
↑ vs CA 1.6% · 53th pctile
EL proficiency (ELPAC) · 5%
25.0%
↑ vs CA 18.0% · 60th pctile
02By grade & subgroupCAASPP 2024–25 · % of tested students
ELATestedEXCMETNEARNOTMET++/CA
Grade 37323%14%34%29%37%−6
Grade 47322%23%33%22%45%+0
Grade 57325%26%32%18%51%+3
MathTestedEXCMETNEARNOTMET++/CA
Grade 37316%29%27%27%45%−0
Grade 47411%41%34%15%51%+10
Grade 57315%19%42%23%34%−1
Science (CAST)TestedEXCMETNEARNOT
Grade 5/8/117322%16%52%10%

CAST is tested in grades 5, 8, and once in high school — not annually. Not part of the Scope Score.

Subgroup · ELATestedMET+vs districtvs CA
Socioeconomically Disadvantaged7733.8%−5−4
White9545.3%−12−17
Hispanic/Latino8236.6%−1−2
03Peer comparison · nearest elementary schoolssorted by Scope Score
SchoolDistScopeEXCMET+GrowthSusp
Atherwood Elementary ←4318.7%44.0%+1.41.3%
Vista Elementary0.7 mi7046.3%75.3%−10.60.7%
Hollow Hills Elementary2.2 mi5840.3%68.9%+0.43.1%
Garden Grove Elementary1.7 mi5518.0%45.4%+5.11.4%
California average4521.3%42.7%−2.91.6%
04More measurescontext · not all part of the Scope Score
YearScopePctileRankExcMet+AbsentSuspGrowth
20195777#129229.6%62.9%5.7%1.3%-3.0pp
20224975#141626.2%48.6%33.7%2.8%+1.5pp
20235478#126226.2%48.2%19.1%0.4%+13.2pp
20244558#240320.5%44.9%15.0%0.5%-15.3pp
20254351#282218.7%44.0%15.2%1.3%+1.4pp
NO STATEWIDE TESTING 2020–21 (COVID) · SCORE AND PERCENTILE ARE RELATIVE TO EACH YEAR'S FIELD
05Climate by student groupchronic absenteeism · 2019 vs 2025 — the two years CDE publishes at subgroup level
Group20192025Δ
Female6.3%12.9%+6.6pp
Male4.9%16.8%+11.9pp
Asian7.3%13.3%+6.0pp
White0.0%23.1%+23.1pp
Hispanic/Latino4.5%15.2%+10.7pp
Two or More Races9.6%8.7%-0.9pp
Students with Disabilities6.8%13.8%+7.0pp
English Learners16.7%14.8%-1.9pp
Socioeconomically Disadvantaged11.2%19.3%+8.1pp
All Students5.6%15.0%+9.4pp
EXC = exceeded standard · MET+ = met or exceeded ("proficient") · Source: CA Dept. of Education · CAASPP 2024–25 · n=5,744 elementary schools · Vintages: climate subgroups 2019+2025 · district finance per its label · ACS 2022 · Data updated 2026-07-03methodology · data updates · CSV · report issue

SchoolScope scores and verdicts are our interpretation of public California Department of Education data — independent analysis, not an official rating. How we analyze · Request a correction