The top reported proficiency rate is 49% in English language arts. The lowest is 45% in Math.
Original Research by School Decision on Mosaics Public School
MOSAICS Public School is a charter school in Caldwell, Idaho, serving students from kindergarten through what is now eighth grade. The school recently completed its planned expansion by adding eighth grade for the current school year, having previously served through seventh. This gives families in the greater Caldwell area a full elementary-through-middle-school pathway at a single charter school, with a publicly reported STEAM focus.
The school sits on Lincoln Road in Caldwell, the county seat of Canyon County and a city with deep agricultural roots. Caldwell grew up around irrigation farming and food processing, and the J.R. Simplot Company, one of the world's largest frozen-food producers, was founded here. The city sits a short drive west of Boise and is part of that metropolitan area's rapid expansion. Downtown Caldwell centers on a restored Indian Creek, with walking paths, bridges, and an annual festival. The broader city offers numerous parks, golf courses, and a growing wine tourism scene along the Sunnyslope Wine Trail. Major employers include the city and county governments, the College of Idaho, both local school districts, Simplot, and West Valley Medical Center.
Caldwell's K-12 system is split between two traditional districts, Caldwell School District and Vallivue School District. MOSAICS operates as its own charter entity alongside these, offering an alternative for families who want a smaller, single-campus option with a STEAM emphasis through the middle grades.
On Idaho's ISAT assessments, MOSAICS shows a mixed academic picture across the tested grades. In math, proficiency in the upper elementary grades is moderate, with fifth grade the strongest performer and a noticeable dip in sixth. Third and seventh grade land in the middle range. The newly added eighth grade shows lower math proficiency than the elementary grades. In English language arts, the pattern is similar: fifth grade stands out as the strongest, while fourth grade is the weakest of the reported grades. Seventh and eighth grade ELA results were suppressed by the state for privacy reasons, so a full picture of middle-grade reading and writing performance is not available. Science results for both tested grades were also suppressed.
Average scale scores were not reported for any subject or grade, and participation rates were missing across the board. A parent may want to ask the school how participation compares with state expectations and whether the school has its own benchmark assessments that fill in what the state data does not show.
The school's enrollment is moderate for its grade band, with fairly even class sizes across kindergarten through seventh grade and a smaller eighth-grade cohort. A substantial share of students qualify for free or reduced-price lunch. The student body is predominantly white, with a large Hispanic share and a small portion identifying as two or more races or other groups. Data on students with individualized education programs and English learners was not available, which is a gap a family whose child receives these services would want to explore directly with the school.
No graduation rate applies here, because MOSAICS does not serve high school grades. The same is true for AP, career-technical, or dual-credit offerings, which are not part of this school's grade span. Information on discipline, course access, staffing ratios, and attendance was not provided, and Title I status was not reported. No neighbor comparison was available, so positioning against nearby schools is not possible from what was in the data.
Housing in the school's zip code sits below the Idaho state benchmark and close to the national median, making it relatively affordable for the region. Rents have risen modestly year over year, while home values have held roughly flat. Caldwell's rapid growth has put pressure on housing supply, and the city has emphasized downtown revitalization alongside its agricultural and emerging wine sectors. For a family considering MOSAICS, the housing market offers entry points that are more accessible than much of the Boise metro, with the trade-off of living in a smaller city whose amenities are still developing.
What the school offers is a focused kindergarten-through-eighth-grade STEAM pathway in a growing community, with academic results that are uneven across grades and some key data still missing. Families drawn to a charter model with a single campus through middle school may find it worth a closer look, particularly if they can speak with the school about how it supports students in the grades where proficiency dips and how it serves students who need additional academic or language support.
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