What researchers studied

Longitudinal observational analysis combining repeated Measures of Academic Progress assessments with high-resolution Oklahoma Mesonet weather records, exploiting variation in school test dates across administration windows to estimate associations between test-day and recent temperatures and student performance. Tulsa Public Schools students taking MAP Growth math and reading assessments across the 2014-15 through 2019-20 school years, with up to three testing occasions per year and up to 18 observations per student

What they found

  • Relative to a test day in the 70s Fahrenheit, a day reaching the 90s was associated with a decline of more than 1.5 percentile ranks in math performance, approximately 0.06 standard deviations.
  • The estimated heat effect was smaller for reading than for math.
  • Heat effects appeared at lower temperatures in spring than in fall and were larger for male students in the authors' estimates.
  • The study highlights that measured test performance can reflect environmental conditions in addition to what a student knows.

What the study does not prove

  • This is a September 2026 EdWorkingPaper update and should not be described as a peer-reviewed journal article unless a later publication is independently verified.
  • The study is based on one district in Tulsa, Oklahoma, so magnitudes should not be generalized automatically to other climates, buildings, age groups, or assessments.
  • Researchers observed outdoor maximum temperature, not the indoor classroom temperature students actually experienced; the schools had climate-control capability.
  • Daily maximum temperature may differ from conditions at the exact testing hour, and flexible MAP scheduling could introduce selection if schools avoided unusually extreme days.
  • The finding concerns test performance under heat exposure and should not be interpreted as evidence that a hot day permanently lowers a student's underlying ability or learning.

Evidence strength: Promising longitudinal evidence with repeated student assessments and high-resolution weather data; localized observational design; EdWorkingPaper.

Why this matters for families

One test can reveal something important without revealing everything. A 2026 Tulsa study found meaningfully lower math scores on very hot test days, a reminder that assessment should inform decisions rather than become a permanent label for a child.

Noor interpretation

How Noor translates the evidence into practice

The Noor-relevant lesson is that an assessment score is useful evidence, but it is never the whole student. Testing conditions, fatigue, stress, timing, environment, and other performance constraints can influence what a score captures on a particular day. Diagnostics should therefore be interpreted alongside observation and follow-up evidence rather than treated as an identity label.

When Noor Lyra Educators assess a student, record the conditions surrounding performance and look for replication across tasks and sessions. If a result seems inconsistent with the student's demonstrated understanding, investigate before concluding that the student lacks the skill. Use diagnostics to guide instruction, then verify the pattern with explanation, independent work, and later retrieval.

Read the original source

Noor links to the original or authoritative source so families can distinguish the evidence itself from our interpretation.

Open original source →

DOI: 10.26300/p9q4-jb65

Research notes

assessmentmath achievementtest performancelearning conditionstemperaturestudent outcomesdiagnostics

No single study determines a student's plan. Noor uses research as one input alongside the learner's goals, observed performance, academic context, and response to instruction.