There was a buyer looking for a home in Grand Rapids. On Zillow, the assigned school scores were displayed, but when searching for the same school on Redfin, the numbers were slightly different. After checking on Niche, it turned out that the grading system itself was different. They wondered which one to trust.

To break it down, the reason is simple. Each real estate site pulls school scores from different sources, and the timing of updates varies. Most use GreatSchools data, but there can be a lag in how quickly that data is reflected on the site, and some, like Niche, use entirely different grading methods. Therefore, it's not unusual for the numbers to differ by one or two points across sites.

To clarify the GreatSchools standard, scores are rated from 1 to 10 and represent a relative position compared to other schools in the same state. A score of 7 or above is considered above average, 5 to 6 is average, and 4 or below is below average.

The score composition consists of three main components: test scores, academic progress over the year, and equity indicators that assess how well schools perform for students from disadvantaged backgrounds or with disabilities. For high schools, college readiness is also included. The way these items are displayed varies by site, leading to differences in perception.

This grading system underwent a revision in 2020. The weight of test scores was reduced while the emphasis on growth and equity was increased, but since different sites reflect this change at different times, score discrepancies widened for a while.

Within Grand Rapids, there are significant variations between schools. Campus Elementary School, part of the Grand Rapids public school district, received a score of 2 according to GreatSchools, while nearby Ada Elementary School, part of the Forest Hills district, is considered one of the top elementary schools in the Grand Rapids area. This means that even within the same geographical boundary, the situation can vary greatly depending on the school district. (As of 2026, greatschools.org)

To check the relevant items in order, here's what to do: First, if you compared scores across multiple sites, go to the original GreatSchools page to check the reference date. Second, look at the student-to-teacher ratio and the grade trend graph next to the score. Third, double-check that the actual assigned school address belongs to that school district.

• Check the reference date on the original GreatSchools page when comparing scores across multiple sites
• Student-to-teacher ratio and grade trends
• Double-check which school district the actual assigned school address belongs to

Particularly in areas like Grand Rapids, where city boundaries do not align perfectly with school district boundaries, caution is advised. Even within the same zip code, the assigned school district can vary significantly depending on which side of the road the house is located. Don't just look at the scores on the site; first, verify which school district the school name belongs to.

For reference, when you open the GreatSchools page, the test score rating, growth rating, and equity rating are displayed separately below the overall score. Don't just look at the summary score; by considering these three detailed ratings together, you can better understand why that school received its score. For example, if the test score rating is low but the growth rating is high, it indicates that students are catching up quickly from a lower starting point.

If you are moving to Grand Rapids from another state, it's also a good idea to check not only the school district but also the property tax rates of the city and county that the district belongs to. There are differences in tax rates even within Michigan, and estimating based on the previous state can lead to budget discrepancies.

This information is not investment or legal advice, and it is recommended to verify the assigned school for the address with a real estate professional before making any agreements.