Bay Area school results: why achievement and growth can rank differently

Before choosing a home from a school rank, compare what the ranks measure

A higher achievement result and a higher student-growth result can point to different districts. That is a reason to investigate the schools and programs relevant to your household, not to turn either list into a verdict on where to buy.

Here is a concrete example from the retained 2025 California School Dashboard results: Mountain View Whisman has the higher math achievement value of the two districts below, while Sunnyvale has the higher math growth value. Both have the same published growth category. One number cannot answer all three questions: how students performed, how they progressed, and whether a particular school would fit your child.

Buyer takeaway: switch between achievement and growth before narrowing a home shortlist. Keep the reporting year, subject, district type and counts beside each result. Then ask what the relevant school would help you understand beyond its district average.

Analysis and source review: November 2, 2026. The numbers are reporting-year 2025 results captured September 18, 2026, not new 2026 scores. This article does not update the school dataset or directory. Directory status and enrollment must be checked separately.

A worked comparison: two elementary-type districts

These are official district-level, All Students results, not averages of the school cards found within each city. “Elementary” is the district's organization type; both retained district records cover kindergarten through eighth grade.

Source: the retained CDE math file and CDE growth file, captured September 18, 2026. The linked publisher files may later be revised; this worked example uses that dated capture. You can inspect the release-pinned district results used by the comparison tool.

The ranks are Housing Alpha's ordering of the published values, not an official CDE ranking or overall school rating. The peer set contains every elementary-type district in our covered geographic release. It is not every Bay Area district. Equal values share a position, so the next position skips: a tie at ninth does not produce a separate tenth place.

These two districts were deliberately selected to illustrate a reversal, not as a representative sample or recommended shortlist. Their ordering changes when the question changes. That does not establish that either district caused better outcomes, or that the difference would be meaningful for one child.

Achievement and growth have different populations and clocks

The achievement column describes the 2024–25 academic result. Its points are not the percentage of children meeting a standard. CDE's academic field definitions distinguish the reported result from its denominator; participation adjustments can affect both. The two math rows shown here have no added participation-loss scores in the retained file. That does not make their denominators interchangeable with growth counts.

The 2025 growth FAQ explains that growth compares actual assessment scores with scores expected from prior assessment results. It covers Smarter Balanced assessments in grades 4–8, excluding California Alternate Assessments. Both selected results use CDE's weighted method, drawing on the 2022–23, 2023–24 and 2024–25 assessment years. The displayed growth denominator is the source's reporting count, not total district enrollment or the sum of three years of students.

Do not subtract an achievement value from a growth value, average their ranks, or treat a growth rank as a change in achievement rank over time. They answer different questions. A “2025” label on both columns does not make them the same population or a simple one-year before-and-after comparison.

Our school evidence criteria keep these measures separate. The listing supplies neither a combined score nor a prediction for a child's progress.

Turn the reversal into a better school visit

Imagine a buyer considering two homes after checking each home's school-assignment process. One district appears higher when the buyer first opens math achievement; the other appears higher after switching to math growth. The buyer should keep both homes under consideration until the actual schools and household needs have been investigated.

This is an investigation checklist, not a recommendation for either district. Keep the information that changes your decision: a confirmed program, an unresolved assignment condition, a useful visit, or an impractical daily route. A city name or rank is a poor substitute for those answers.

Reproduce the comparison without changing the peer group

Open school district results. Select the math achievement and math growth views, keeping the district type and reporting year in mind. School-level filters use the district's reported grade range; they do not create separate scores for elementary, middle or high school. Filtering by city or name narrows the rows you see while preserving each original same-type rank.

Our current listing covers 32 districts intersecting 25 San Francisco and Peninsula city guides, grouped by district type. The worked ranks above use the 22 elementary-type districts only. A city-boundary intersection may include water or open space; it does not establish that a district serves a particular home. Missing or incompatible values remain unranked. High-school-only districts have no applicable grades 4–8 growth result, which is different from a zero.

Use the school-assignment verification guide for the separate address and enrollment questions. Then compare the actual homes using consistent home-price evidence and your own costs, condition and travel needs. These district results do not justify a school-related home-price premium or an appreciation forecast.

Register interest in future buyer research. Signup saves your request; it does not promise a delivery date.