Clark Elementary, Issaquah WA - Test Scores & Data

Original Research by School Decision on Clark Elementary

Clark Elementary sits in Issaquah, a city that grew from a mining and lumber town into a corporate hub and residential center. Costco’s global headquarters is here, and the city has a historic downtown with a farmers market, a theater, and community events, set against the backdrop of the Issaquah Alps and Lake Sammamish. The elementary school is part of the Issaquah School District, which has faced recent enrollment changes and put a major capital bond measure before voters to fund construction and renovations, signaling attention to aging infrastructure in a community that has shifted from a bedroom suburb to a place with more housing variety and services.

Clark serves kindergarten through fifth grade as a regular public school. It enrolls a large student body for an elementary school, and its composition reflects the area’s diversity. A substantial share of students are Asian, making up the largest racial group, followed by white students, with smaller shares identifying as two or more races, Hispanic, Black, American Indian or Alaska Native, and Native Hawaiian or Pacific Islander. About a third of students qualify for free or reduced-price lunch, an indicator of economic diversity in a high-cost housing market. The school sits in a zip code where home values and rents are well above national medians, and the broader King County market shows a very high median household income context. Missing from the data are counts for students receiving special education services and English learner services, so a parent may want to ask the school about those programs and supports directly.

Academically, Clark’s performance on Washington’s state assessments places the school well above typical levels. Across tested subjects and grades, overall proficiency is high, and the proficiency index puts the school in the top quartile among elementary schools relative to districts across King County. This is a strong academic signal for a school serving only early grades. In math, proficiency in third, fourth, and fifth grades is solid and consistent at a level well above the midpoint. English language arts results are similarly strong, with fourth and fifth grades performing at a high rate and third grade somewhat lower but still at a level that many families would find reassuring. Science, tested only in fifth grade, shows a particularly high proficiency rate. Since only one year of data is available, there is no trend line to assess whether these results are stable or changing, but the single snapshot is clearly favorable.

Because Clark serves only kindergarten through fifth grade, there is no graduation rate to report. The school’s scope is the early academic foundation. Housing in Issaquah is expensive, with home values and rents among the highest in the state, and the economic context is that of a well-resourced region. The city itself has grown substantially in recent decades, and future development includes a planned light rail extension and the redevelopment of a large gravel quarry north of downtown, which will bring more housing and commercial space over time. For a family, this means a neighborhood school in a community with strong economic anchors, a high cost of entry, and a student body that is both affluent and economically mixed. The academic picture is clearly a strength, and the main gaps in the data are around special education and English learner counts, which are worth clarifying directly with the school.

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Academic performance

How students perform on state tests, by grade, set against the district.

Math

Grade 368%

School 68% · District 79% · ▼ 11 pts below district

▲ 17 pts above state median · ▲ 8 pts above county median

Grade 469%

School 69% · District 80% · ▼ 11 pts below district

▲ 21 pts above state median · ▲ 9 pts above county median

Grade 570%

School 70% · District 76% · ▼ 6 pts below district

▲ 29 pts above state median · ▲ 15 pts above county median

English language arts

Grade 360%

School 60% · District 74% · ▼ 13 pts below district

▲ 13 pts above state median · ▲ 5 pts above county median

Grade 478%

School 78% · District 80% · ▼ 2 pts below district

▲ 29 pts above state median · ▲ 20 pts above county median

Grade 577%

School 77% · District 83% · ▼ 6 pts below district

▲ 23 pts above state median · ▲ 13 pts above county median

Science

Grade 579%

School 79% · District 81% · ▼ 1 pts below district

▲ 28 pts above state median · ▲ 18 pts above county median

This schoolIssaquah School District, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.

Proficiency by household income

English language arts

Grade 3Lower-income27%Higher-income75%48 pp gap

Grade 4Lower-income48%Higher-income87%39 pp gap

Grade 5Lower-income39%Higher-income94%55 pp gap

Mathematics

Grade 3Lower-income32%Higher-income83%51 pp gap

Grade 4Lower-income44%Higher-income76%32 pp gap

Grade 5Lower-income36%Higher-income86%49 pp gap