Answer extracted from the Education: Joining the Dots podcast — listen to the full episode below.
Should standardized tests replace teacher judgment in schools?
No. Standardized test results should support and inform teacher judgment, not replace it. A single test taken on a particular day reflects only a snapshot of a student's knowledge, while teachers bring ongoing observation, context, and understanding that no single assessment can capture. The most reliable student evaluation emerges from combining test data with educator insight.
Standardized assessments are valuable precisely because they provide consistency and measurable data. However, they come with inherent limitations. As explained in the podcast, a student's performance on any given day is influenced by circumstances beyond academic ability—fatigue, anxiety, external stress, or simply having an off day can skew results.
Teachers, by contrast, accumulate months or years of direct observation. They see patterns in student work, understand individual learning styles, recognize progress that may not yet show on a standardized score, and can contextualize performance within the broader picture of a child's development. This continuous, qualitative knowledge is irreplaceable.
Building an integrated assessment strategy
The goal is not to choose between standardized assessments and teacher judgment, but to build a comprehensive toolkit where both serve distinct purposes. Standardized tests provide objective data points that allow schools to benchmark progress, identify trends, and make evidence-based decisions at scale. Teachers use this data alongside their professional judgment to design targeted interventions and personalize instruction.
As Becky Sinjin outlines in the episode, this integration requires training and systems that bring data together accessibly so educators can act on it immediately. When teachers have easy access to assessment data—both standardized and classroom-based—they can triangulate information and make sharper decisions about where students need support.
"The standardized test results are there to support the teacher judgment, to contribute to the teacher judgment, not to replace it."
Becky Sinjin — Freelance school assessment and performance data consultant. With 15 years of experience starting as a data manager in a large secondary school and seven years working independently with multiple organizations on data strategy, Sinjin brings deep insight into how schools can leverage assessment data effectively. She previously trained teachers and administrators at GL Assessment on assessment systems and has worked extensively with CISRA tracking platforms.
One often-overlooked detail from the conversation is how the podcast explores proximal versus distal assessments, clarifying which types of measurement work best for different instructional moments—a nuance that deepens the case for using multiple assessment sources strategically.
Key takeaways
- Standardized tests capture a single moment and cannot account for variables affecting performance on any given day.
- Teacher judgment, built on months of observation, provides irreplaceable context and identifies progress invisible to one-off assessments.
- The strongest school assessment strategy combines standardized data with educator insight, using each to validate and inform the other.
- Schools need systems and training to make assessment data easily accessible to teachers so they can act on it in real time.
See also
How do age-standardized scores improve the accuracy of student progress measurement?
GL Assessment uses standardized age scores by calculating averages for pupils of a certain age in years and months rather than just for a whole year group, allowing for more precise and fair comparisons of student progress.
What are the key limitations of internally designed assessments compared to standardized tests?
Internally designed tests can be intrinsically harder or easier than one another through no fault of the teachers setting them, making them unreliable for consistent measurement and cross-school comparison.
What theoretical foundation supports the use of oracy in cognitive development?
Vygotsky's theories emphasize that communication tools are critical for cognitive development because they help shape the way individuals understand and process information.