The top reported proficiency rate is 45% in Math. The lowest is 32% in Science.
Original Research by School Decision on Tiffany Park Elementary School
Tiffany Park Elementary School serves kindergarten through fifth grade in the Renton School District, a regular public school in a city that blends industrial heritage with suburban growth. The school sits in a part of Renton that is largely residential, shaped by its location near Lake Youngs and convenient access to the region’s major highways. The school itself is a mid-sized elementary, with an enrollment that places it in a familiar range for a suburban King County school of this grade band.
The student body is notably diverse, with no single racial or ethnic group forming a majority. White students make up the largest share, followed closely by Asian students and Hispanic students, with smaller but meaningful populations of students who are Black, of two or more races, Native Hawaiian or Pacific Islander, and American Indian or Alaska Native. A substantial share of students qualify for free or reduced-price lunch, an indicator that the school serves a community with significant economic diversity. This mix shapes the peer environment: children at Tiffany Park learn alongside classmates from a wide range of backgrounds, which some families value as a reflection of the broader world, while others may want to consider the academic context this peer group creates.
On state assessments, the school’s results show a varied picture. In math, proficiency rates decline as students move up in grade. Third graders collectively meet the state standard at a rate that is solid, fourth graders do so at a lower rate, and fifth graders at a notably lower rate still. English language arts follows a similar pattern: third and fourth graders both show proficiency rates that sit near the middle of the range for the state, while fifth graders again trail behind. Fifth grade science results are also on the lower end. When compared to other elementary schools within districts across King County, Tiffany Park’s overall proficiency across tested subjects and grades lands below the midpoint. This is the central academic fact for a parent or resident to weigh. The school is not among the higher-performing elementary schools in the county, and the downward trend in math by grade is a specific soft spot a parent may want to follow up on with the school to understand what interventions or supports are in place.
The broader district context may matter to families considering this school. The Renton School District passed a major bond in 2022, funding renovations at several high schools and a new elementary school in the Fairwood area scheduled to open in fall 2026. The district is also in the middle of rolling out RSD Academies, a high school redesign that organizes learning around career-themed small communities, though this change directly affects high school students, not elementary students at Tiffany Park. The new elementary school planned for Fairwood could eventually shift attendance boundaries, something families buying a home in the area may want to track.
Renton itself is a city with a strong industrial and manufacturing base, anchored by Boeing’s large factory near Lake Washington. The city’s growth has been steady, with new residential and commercial developments like The Landing and Southport adding housing and retail. The downtown core has been redeveloped with transit-oriented housing and a transit center, but much of Renton remains car-dependent, with the school located in a neighborhood that requires driving for most errands. Housing values in the area reflect the broader King County market, where prices are high relative to national averages, and the rental market is similarly expensive. For families, the cost of living is a given in this part of the region, and the school’s location within the city offers access to both urban amenities and suburban residential streets.
Tiffany Park Elementary does not have publicly reported data on chronic absenteeism or special education and English learner populations, so it is not possible to assess student support in those areas from this information alone. A parent interested in the school’s approach to students who need extra help, or in how many students are chronically absent, would want to ask the school directly. What is clear is that the school serves a diverse, middle-to-lower-income community and produces academic results that are below the typical level for its county, particularly by fifth grade. For a family that values a diverse peer environment and is comfortable engaging with the school on academic support, Tiffany Park may fit. For families whose priority is strong test scores above the county median, the data suggests they may want to explore other options in the district or in neighboring areas.
See more original research from School Decision →