English
Grades 3 and 4 · spring 2026 · 26 tested
- Advanced
- 27%
- Proficient
- 42%
- Below the standard
- 31%
69% Proficient or Advanced in grades 3 and 4.
Independent charter school · Orange County Department of Education · Costa Mesa, California
Costa Mesa · TK–8 · 97 students (2024–25)
The dots are California’s 5,726 scored public elementary schools, placed by Scope Score on spring 2026 tests. How it’s built →
Weighted composite · 2025–26
A weighted mix of five of the six elementary school measures.
Well above California in English and math: 69% and 85% scored Proficient or Advanced in grades 3 and 4, spring 2026, against 45% and 45%.
From spring 2026, the state calls its top two levels “Proficient or Advanced” (formerly “Met or Exceeded”).
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International School for Science and Culture’s 2025–26 test results, released October 15, 2026, are on this page.
Campus map · © OpenStreetMap
Drawn from OpenStreetMap. Volunteers map it, so a new building may be missing. Buildings with no mapped height are drawn one storey high.
A picture of the campus, not an attendance boundary or a rating.
Schools maintain a closed campus policy. For students’ safety, visitors may enter a campus only with the school’s official permission; this drawing implies no permission to enter.
Only 26 students were tested in English (reading and writing) and 27 in math here in grades 3 and 4 in spring 2026, so one student’s result moves each rate by about 4 points.
Ask International School for Science and Culture how it admits students. Charter schools set their own enrollment steps and dates. Evidence ↓
International School for Science and Culture scores higher than 97 in 100 of California’s 5,726 scored public elementary schools: 97th percentile, Strong, spring 2026. Evidence ↓
In 2025–26, 3 in 100 students missed 10% or more of school days, against 13 in 100 at the average Orange County Department of Education elementary school. 0 of 158 students were suspended at least once in 2025–26, against 1.6% at the average California elementary school. Evidence ↓
In its 2025–26 plan, $814,450 is planned for 26 funded actions. These are planned amounts; the charter school reports what it spent in a later plan. Evidence ↓
The questions drawn from this page are under Next steps, ready to copy. Evidence ↓
Academic achievement
69% of the students tested scored Proficient or Advanced in English; 85% did in math.
State tests (CAASPP), spring 2026
In grades 3 and 4, spring 2026, 69% of the 26 students tested scored Proficient or Advanced in English, against 45% across California. In math, 85% of 27 did, against 45% across California. Fewer than 30 students tested, so one year can swing a lot; ask how results looked in other years.
Grades 3 and 4 · spring 2026 · 26 tested
69% Proficient or Advanced in grades 3 and 4.
Grades 3 and 4 · spring 2026 · 27 tested
85% Proficient or Advanced in grades 3 and 4.
What each level means: California's level descriptions.
English
| Measure | Grade 3 | Grade 4 | Grade 5 |
|---|---|---|---|
| Proficient or Advanced | 91% | 53% | suppressed |
| Advanced | 55% | 7% | suppressed |
| Proficient | 36% | 46% | suppressed |
| Developing level | 9% | 47% | suppressed |
| Minimal | 0% | 0% | suppressed |
| Tested | 11 | 15 | 9 |
| California | 44% | 46% | 49% |
| Difference | +47 | +7 | — |
| Measure | Grade 6 | Grade 7 | Grade 8 |
|---|---|---|---|
| Proficient or Advanced | suppressed | suppressed | suppressed |
| Advanced | suppressed | suppressed | suppressed |
| Proficient | suppressed | suppressed | suppressed |
| Developing level | suppressed | suppressed | suppressed |
| Minimal | suppressed | suppressed | suppressed |
| Tested | 7 | 4 | 6 |
| California | 48% | 51% | 49% |
| Difference | — | — | — |
California is CDE’s statewide English row for each grade, counting every student tested there; the comparisons in the chapters combine these rows for their grades, weighted by students tested (our calculation).
Math
| Measure | Grade 3 | Grade 4 | Grade 5 |
|---|---|---|---|
| Proficient or Advanced | 92% | 80% | suppressed |
| Advanced | 92% | 67% | suppressed |
| Proficient | 0% | 13% | suppressed |
| Developing level | 8% | 20% | suppressed |
| Minimal | 0% | 0% | suppressed |
| Tested | 12 | 15 | 9 |
| California | 47% | 42% | 37% |
| Difference | +45 | +38 | — |
| Measure | Grade 6 | Grade 7 | Grade 8 |
|---|---|---|---|
| Proficient or Advanced | suppressed | suppressed | suppressed |
| Advanced | suppressed | suppressed | suppressed |
| Proficient | suppressed | suppressed | suppressed |
| Developing level | suppressed | suppressed | suppressed |
| Minimal | suppressed | suppressed | suppressed |
| Tested | 7 | 4 | 5 |
| California | 37% | 38% | 36% |
| Difference | — | — | — |
California is CDE’s statewide math row for each grade, counting every student tested there; the comparisons in the chapters combine these rows for their grades, weighted by students tested (our calculation).
A grade the school doesn't teach has no row. “Suppressed” marks a result CDE blanks because fewer than 11 students tested (CDE’s reporting rule); “none tested” marks a grade CDE lists with no students tested; “not on file” marks a result missing from the records we hold. None of them means zero.
New to these scores? Read CAASPP scores explained: how to read your child’s report →
School patterns · grades 3 and 4 · spring 2026 · What patterns mean
English went from 96% to 69% and math from 67% to 85%.
This school
California, same grades45% → 45%2025 → 2026 · 814,372 → 798,645 tested
This school
California, same grades44% → 45%2025 → 2026 · 820,989 → 800,621 tested
Each year is a different group of students.
Ask: How does the school check what’s working in English?
| Students | Advanced | Proficient | Developing level | Minimal | Tested |
|---|---|---|---|---|---|
| English, grades 3 and 4 · This school | 27% | 42% | 31% | 0% | 26 |
| English, grades 3 and 4 · California | 24% | 21% | 21% | 34% | 798,645 |
| English, grades 3 and 4 · Orange County Department of Education | 30% | 23% | 20% | 27% | 1,586 |
| Math, grades 3 and 4 · This school | 78% | 7% | 15% | 0% | 27 |
| Math, grades 3 and 4 · California | 21% | 24% | 25% | 30% | 800,621 |
| Math, grades 3 and 4 · Orange County Department of Education | 26% | 24% | 25% | 25% | 1,588 |
Below the standard combines the state’s Developing and Minimal levels, its two lowest. Data source: California Department of Education, spring 2026. The state comparison combines CDE’s rows for the same grades, weighted by students tested (our calculation). The district row combines its public schools in the same grades, weighted by students tested.
English and math results for the tested grades. These do not measure the experience in kindergarten or the early grades.
Chart and table: 2022–2026. Hover, tap or focus a chart and use the arrow keys to see each year.
The lines break across years without comparable results.
In grades 3 and 4, the share at the state’s top two levels in English went from 55% in 2022 to 69% in 2026. In math, it went from 34% in 2022 to 85% in 2026. Each year is a different group of students.
| Year | This school | California |
|---|---|---|
| 2022 | 55% 31 tested | 43% 833,089 tested |
| 2025 | 96% 27 tested | 45% 814,372 tested |
| 2026 | 69% 26 tested | 45% 798,645 tested |
| Year | This school | California |
|---|---|---|
| 2022 | 34% 29 tested | 41% 836,897 tested |
| 2023 | — Withheld by CDE | — |
| 2025 | 67% 27 tested | 44% 820,989 tested |
| 2026 | 85% 27 tested | 45% 800,621 tested |
CDE withholds a year’s results when fewer than 11 students tested, as it did here in 2023.
What you can do
International School for Science and Culture’s own board decides its plan.
The state hasn’t placed International School for Science and Culture in a support program. Federal designation under the Every Student Succeeds Act, 2025–26. Source
Orange County Department of Education authorized this charter; its current term ends June 30, 2027.
Authorizer from the California Department of Education’s charter term file; term from its Charter School Database, checked October 22, 2026. Source
California law requires schools to screen kindergartners through second graders for reading difficulties every year, with some exceptions. You get notice at least 15 days before, results within 45 days, and can opt out in writing.
Kindergartners can’t be screened before the 91st school day; transitional kindergarten isn’t covered.
If screening shows your child may be at risk for reading difficulties, the school must provide supports. That result isn’t a diagnosis, and screening can’t be used to delay a special-education evaluation.
Ask how many K–2 students screening found at risk last year, and how many got extra reading help.
California Education Code § 53008. Source
Life at school
3 in 100 students were chronically absent in 2025–26.
State attendance and suspension records, 2025–26
That means they missed 10% or more of school days. At the average Orange County Department of Education elementary school, 13 in 100 were. 0 of 158 students were suspended at least once in 2025–26, against 1.6% at the average California elementary school.
5 of 154 students were chronically absent, meaning they missed 10% or more of school days.
0 of 158
students were suspended at least once. Average California elementary school 1.6%.
Ask: When a child starts missing school, who calls the family, and how soon?
Ask current families how the school keeps them informed, and what happened when their child needed help. Ask staff how long teachers tend to stay.
Every learner
Hispanic or Latino students are the largest group here: 44%.
Students, families and teachers
41%of students qualified for free or reduced-price meals in 2024–25, 40 of 97. California: 63%.
5teachers, 2024–25
15 yearsaverage experience, 2024–25
0%in their first year, 2024–25
100%of teaching positions with proper credential and placement, 2021–22
Ask: Which student groups does the school track most closely, and what does it do when one falls behind?
| Students, 2025–26 | Here |
|---|---|
| Hispanic or Latino | 44% |
| White | 23% |
| Asian | 13% |
| Two or more races | 11% |
| Black or African American | — |
| Filipino | — |
| American Indian or Alaska Native | — |
| Pacific Islander | — |
| Not reported | — |
Data source: California Department of Education chronic-absence file, 2025–26. Shares are of the students the file counts for attendance (CDE’s “eligible enrollment”); unavailable categories are shown as a dash.
CDE SARC report 2024–25, measured 2021–22: 100% of teaching positions, 7 properly credentialed teaching-position FTE out of 7 total position FTE. This measures positions, not individual teachers.
In its own words
Its 2025–26 plan
The plan lists what the school commits to spend and measure.
Next steps
Ask International School for Science and Culture how it admits students. Charter schools set their own enrollment steps and dates.
Confirm this school’s current process directly.
Directory location · Explore nearby schools on the map. Confirm enrollment with the school.
Office (949) 441-45001770 Tustin Avenue, directions (opens Google Maps in a new tab)
The closest elementary schools, by straight-line distance from this campus. Distance isn’t an attendance boundary.
Each percentile compares a school with California schools at its own level.
Every figure on this page, with its source, grades, year and count.
| Factor | School | Index | Weight |
|---|---|---|---|
| Advancedaverage of English and math | 55% | 80 | 42% |
| Proficient or Advancedaverage of English and math | 79% | 76 | 23% |
| Chronically absent | 3 in 100 | 64 | 5% |
| Suspension rate | 0 of 158 | 59 | 5% |
| English learners: top level | 63% | 97 | 5% |
Index is where the school's value sits among the California elementary schools we score, from 0 to 100, where 50 is their average; it is not a percentile. School values are from 2025–26. Chronic absence and suspension are CDE's all-students school rates; the score uses an adjusted version of each that pulls small schools toward the average, so their index can sit nearer 50 than the rate suggests. The weights above add to 80%: the remaining 20%, for measures with no value here, is shared out among the measures above.
| School year | Scope Score | Percentile | Rank | Comparison group |
|---|---|---|---|---|
| 2025–26 | 79 | 97 | #149 | California elementary schools · 5,726 schools · current formula |
2021–22, 2022–23, 2023–24 and 2024–25 have records on file but no Scope Score we could verify against that year’s source files, so no score is shown for them.
| School year | Chronic absence | Suspension | Grade gap (points) |
|---|---|---|---|
| 2021–22 | not on file | not on file | −23 |
| 2022–23 | not on file | not on file | +3 |
| 2023–24 | 14 in 100 | 0 of 125 | — |
| 2024–25 | 7 in 100 | 0 of 118 | — |
| 2025–26 | 3 in 100 | 0 of 158 | — |
Chronic absence and suspension are CDE’s all-students school rates for each year.
English and math by test year · all tested grades
| Year · subject | Students with scores | Top level | Top two levels |
|---|---|---|---|
| 2026 · English | 52 | 29% | 73% |
| 2026 · Math | 52 | 81% | 87% |
| 2025 · English | 51 | 69% | 86% |
| 2025 · Math | 51 | 53% | 73% |
| 2024 · English | 49 | 14% | 37% |
| 2024 · Math | 48 | 23% | 35% |
| 2023 · English | 50 | 30% | 54% |
| 2023 · Math | 44 | 41% | 57% |
| 2022 · English | 65 | 28% | 54% |
| 2022 · Math | 63 | 25% | 35% |
Each year names its school year end (2026 = 2025–26). “Students with scores” counts each subject on its own, so don’t add the English and math counts together. A dash is unavailable, not zero.
Earlier years · grade and subject
| Year · grade · subject | Students with scores | Met or exceeded |
|---|---|---|
| 2025 · Grade 3 · English | 15 | 93% |
| 2025 · Grade 4 · English | 12 | 100% |
| 2025 · Grade 5 · English | 9 | — |
| 2025 · Grade 6 · English | 4 | — |
| 2025 · Grade 7 · English | 6 | — |
| 2025 · Grade 8 · English | 5 | — |
| 2025 · Grade 3 · Math | 15 | 87% |
| 2025 · Grade 4 · Math | 12 | 42% |
| 2025 · Grade 5 · Math | 9 | — |
| 2025 · Grade 6 · Math | 4 | — |
| 2025 · Grade 7 · Math | 6 | — |
| 2025 · Grade 8 · Math | 5 | — |
| 2024 · Grade 3 · English | 13 | 38% |
| 2024 · Grade 4 · English | 9 | — |
| 2024 · Grade 5 · English | 9 | — |
| 2024 · Grade 6 · English | 8 | — |
| 2024 · Grade 7 · English | 5 | — |
| 2024 · Grade 8 · English | 5 | — |
| 2024 · Grade 3 · Math | 12 | 33% |
| 2024 · Grade 4 · Math | 9 | — |
| 2024 · Grade 5 · Math | 9 | — |
| 2024 · Grade 6 · Math | 8 | — |
| 2024 · Grade 7 · Math | 5 | — |
| 2024 · Grade 8 · Math | 5 | — |
| 2023 · Grade 3 · English | 15 | 47% |
| 2023 · Grade 4 · English | 9 | — |
| 2023 · Grade 5 · English | 12 | 58% |
| 2023 · Grade 6 · English | 8 | — |
| 2023 · Grade 7 · English | — | — |
| 2023 · Grade 8 · English | — | — |
| 2023 · Grade 3 · Math | 10 | — |
| 2023 · Grade 4 · Math | 8 | — |
| 2023 · Grade 5 · Math | 12 | 42% |
| 2023 · Grade 6 · Math | 7 | — |
| 2023 · Grade 7 · Math | — | — |
| 2023 · Grade 8 · Math | 4 | — |
| 2022 · Grade 3 · English | 14 | 71% |
| 2022 · Grade 4 · English | 17 | 41% |
| 2022 · Grade 5 · English | 16 | 56% |
| 2022 · Grade 6 · English | 9 | — |
| 2022 · Grade 7 · English | 6 | — |
| 2022 · Grade 8 · English | — | — |
| 2022 · Grade 3 · Math | 13 | 62% |
| 2022 · Grade 4 · Math | 16 | 12% |
| 2022 · Grade 5 · Math | 16 | 31% |
| 2022 · Grade 6 · Math | 9 | — |
| 2022 · Grade 7 · Math | 6 | — |
| 2022 · Grade 8 · Math | — | — |
Current 2025–26 grade results are under Academic achievement, in Results for each grade. “Students with scores” counts the students tested in that grade, subject and year. A missing result is not zero, and each year’s row is a different group of children.
| Science (CAST) | Tested | Advanced | Proficient | Developing level | Minimal |
|---|---|---|---|---|---|
| Schoolwide | 15 | 40% | 27% | 33% | 0% |
CAST is tested in grades 5 and 8, then once in grade 10, 11, or 12. This row is the school's all-student aggregate. Not part of the Scope Score.
| Group | English | n | CDE category | Math | n | CDE category |
|---|---|---|---|---|---|---|
| All students | +87 | 27 | Exceptional | +75 | 27 | Exceptional |
| Hispanic or Latino | +91 | 16 | Exceptional | +80 | 16 | Exceptional |
| Low-income | +78 | 16 | Exceptional | +69 | 16 | Exceptional |
| English learners | +80 | 12 | Exceptional | +100 | 12 | Exceptional |
| English-only students | +74 | 12 | not categorized | +49 | 12 | not categorized |
CDE reports scale-score points against the state’s expected score — not a percentage or percentile. The table keeps the group records SchoolScope imported for this school, including rows below our narrative display threshold. Muted rows have fewer than 30 students with a valid growth score. SchoolScope uses that threshold for the shorter narrative view; the reported values stay visible here. “Not categorized” means this imported CDE row has a growth value without a performance category. At least one estimate here is a CDE weighted estimate; that describes how CDE combines years, not a year-over-year trend. A group absent from this table has no imported record shown here. Its absence alone does not establish its size or performance. CDE growth covers grades 4–8; here that is grade 4. SchoolScope does not use these CDE figures in its Scope Score.
State model · English+87 pts vs expected
matched students, grade 4California growth model, English: +87 scale-score points versus the state's expectation, CDE category Exceptional, against SchoolScope's +2-point median for California elementary school records.State model · math+75 pts vs expected
matched students, grade 4California growth model, math: +75 scale-score points versus the state's expectation, CDE category Exceptional, against SchoolScope's +2-point median for California elementary school records.CDE’s all-students school rates for 2024–25 and 2025–26; the change is the difference between the two rates as printed.
| Year-over-year school rates |
|---|
| Chronic absenteeism2024–25 · 7 in 100 → 2025–26 · 3 in 100 · −4 in 100 |
| Suspension rate2024–25 · 0 of 118 → 2025–26 · 0 of 158 · 0.0 percentage points |
| Group | 2018–19 | 2025–26 | Change |
|---|---|---|---|
| Female | — | 4 in 100 | — |
| Male | — | 3 in 100 | — |
| Asian | — | 0 in 100 | — |
| Hispanic or Latino | — | 4 in 100 | — |
| Two or more races | — | 0 in 100 | — |
| White | — | 6 in 100 | — |
| Students with disabilities | — | 0 in 100 | — |
| English learners | — | 5 in 100 | — |
| Low-income | — | 8 in 100 | — |
| All students | — | 3 in 100 | — |
Two reported school years only; no intervening-year result is implied. Source: CDE school-level chronic absenteeism by student group.
NCES F-33 · FY 2020–21 (2021) · fall district membership: 2,773 pupils
| Group | Dollars | Share, to two decimals | Printed |
|---|---|---|---|
| Instruction | $79,104,704 | 26.41% | 27% |
| Instruction support | $138,712,166 | 46.31% | 46% |
| Student services | $23,320,338 | 7.79% | 8% |
| Administration | $42,696,911 | 14.26% | 14% |
| Buildings & maintenance | $15,683,337 | 5.24% | 5% |
| Total | $299,517,456 | 100.00% | 100% |
Source: NCES F-33 · Full district breakdown →
CDE 2024–25 SARC, Teacher Preparation and Placement table; measured school year 2021–22. Share of reported school teaching-position full-time equivalents assigned to properly assigned intern credential holders. A reported 0.0% is shown; unavailable rates are omitted. This is a position share, not a count of current teachers or of emergency permits.
| Measure | Estimate |
|---|---|
| Median household income | $108,994 |
| Bachelor's degree or higher (adults 25+) | 44% |
| ZIP-area population | 60,393 |
| Median age | 36.0 years |
Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates. Median household income covers the past 12 months and is reported in 2024 inflation-adjusted dollars. Bachelor's degree or higher uses adults age 25 and over as its population. A dash is unavailable, not zero; a reported zero remains zero. ZIP-area figures do not establish the school's attendance area or describe its enrolled students. These figures are not part of the Scope Score. See all schools in ZIP code 92627 →
Data sources: public data sources, including the California Department of Education · state tests (CAASPP) 2025–26 · Scope Score from 2025–26 results, compared across 5,726 elementary schools · attendance and suspensions by student group from 2018–19 and 2025–26 · district finance for the year each row names · Census survey (ACS) 2020–2024 · Data updated October 15, 2026
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