Opinion Blog

Peter DeWitt's

Finding Common Ground

A former K-5 public school principal turned author, presenter, and leadership coach, Peter DeWitt provides insights and advice for education leaders. Former superintendent Michael Nelson is a frequent contributor. Read more from this blog.

School & District Management Opinion

The Difference Between Data and Evidence: What School Leaders Need to Know

Just collecting the information is insufficient
By Peter DeWitt & Michael Nelson — December 15, 2024 4 min read
Screen Shot 2024 12 13 at 7.40.48 AM
  • Save to favorites
  • Print

Leaders often tell us that they collect a plethora of data but do not always find the time to look at it, much less talk about it with staff and use it to take actionable next steps. That’s unfortunate, because conversations around data can help lead to shared understanding and a deeper impact on student learning. When used correctly, data, say on student learning, can help teachers define what students need, like stronger tier one instruction. That will then require teachers to develop a shared understanding about what tier one instruction looks like and how it can best help with the issues on student learning they are seeing in their classrooms.

Additionally, collecting and using school-processes data, such as on professional learning communities, can help leaders and teachers understand whether PLCs are working or not and how to improve on them.

In our work, we focus on three areas with leaders and teachers that will help foster collective leader efficacy (CLE): developing a shared language, engaging in joint work, and collecting and using evidence of impact (data).

Over the years, “data” has definitely become a four-letter word in the minds of teachers and leaders because it’s been used as a hammer and not a flashlight (check out our video about that here). The central focus for these three areas are typically around a priority, or goal, for a school improvement plan.

When we engage the leaders, teachers, and their teams we work with, we find that they don’t always differentiate between data and evidence in the third part of the definition. This is where we dive into building a shared understanding of what both words mean.

Data refer to raw facts, figures, or information collected from observations, measurements, surveys, tests, or other sources. In an educational setting, data can include test scores, attendance records, survey responses, or classroom-observation notes. Evidence refers to data that have been analyzed, interpreted, or used to support a claim, conclusion, or decision. Evidence goes beyond the raw numbers to show meaningful patterns, trends, or findings that can inform action.

This distinction is important, because we find data can be static; educators collect it but don’t take action. Evidence is about taking the data and actually using the information to make impactful moves.

Questions Please!
Educators tell us they do not always know what questions to ask when exploring data and evidence. We find Victoria Bernhardt’s work to be a great catalyst for conversations about data and evidence.

To quell some of the anxiety that comes with talking about data and foster a learner’s mindset to see strengths, gaps, and blind spots in our leadership or teaching, we offer seven areas of questions to help guide your practice.

Q1 - Perception Questions
What insights have we gained from our perception data (e.g., school culture, climate, values) that challenge our assumptions about how we “do business” as a school? How can we use these data to guide improvement?

Q2 - Processes Questions
Which school processes (instructional, organizational, administrative) have the greatest impact on student learning in your school? What data support this, and how could these processes be improved?

Q3 - Patterns to Guide Performance
What patterns do you see in your student learning data (e.g., assessments FOR, AS, and OF learning)? According to Bernhardt,

  • Assessment FOR learning – Assessment helps teachers gain insight into what students understand in order to plan and guide instruction and provides helpful feedback to students.
  • Assessment AS learning – Students develop an awareness of how they learn and use that awareness to adjust and advance their learning, taking increased responsibility for their learning.
  • Assessment OF learning – Assessment informs students, teachers, and parents, as well as the broader educational community.

How are these data informing your next steps in improving instructional strategies?

Q4 - Professional Development
What types of data (e.g., surveys, observations, student performance) are most helpful in identifying professional development needs for your staff? How can you align your leadership efforts to support these needs?

Q5 - Impactful Programs
How effectively are your school programs (e.g., Accelerated Reader, AVID, 9th Grade Transition) supporting student learning and growth? What data can you collect to evaluate their impact?

Q6 - Action Over Inertia
How do you ensure that data discussions during staff meetings inspire action rather than overwhelm?

Q7 - Reflective
If you knew then what you know now, how might you have taught that lesson/or facilitated that faculty meeting differently?

In the End
These seven areas of questioning can help teachers and leaders engage in deeper and ongoing conversations about using evidence from their data to improve their teaching and learning practices and ultimately better support student learning. Making this practice a staple of staff meetings and workshops creates a culture of fostering collective efficacy between the leader and teachers.

Interested in engaging in deeper conversations about data, evidence, and grading? Then click here to listen to an interview with Tom Guskey on our Leader’s Coaching Leaders podcast to further consolidate the information from this blog post.

The opinions expressed in Peter DeWitt’s Finding Common Ground are strictly those of the author(s) and do not reflect the opinions or endorsement of Editorial Projects in Education, or any of its publications.

Events

This content is provided by our sponsor. It is not written by and does not necessarily reflect the views of Education Week's editorial staff.
Sponsor
Assessment Webinar
3 Key Strategies for Prepping for State Tests & Building Long-Term Formative Practices
Boost state test success with data-driven strategies. Join our webinar for actionable steps, collaboration tips & funding insights.
Content provided by Instructure
Jobs Virtual Career Fair for Teachers and K-12 Staff
Find teaching jobs and K-12 education jubs at the EdWeek Top School Jobs virtual career fair.
This content is provided by our sponsor. It is not written by and does not necessarily reflect the views of Education Week's editorial staff.
Sponsor
Artificial Intelligence Webinar
Promoting Integrity and AI Readiness in High Schools
Learn how to update school academic integrity guidelines and prepare students for the age of AI.
Content provided by Turnitin

EdWeek Top School Jobs

Teacher Jobs
Search over ten thousand teaching jobs nationwide — elementary, middle, high school and more.
View Jobs
Principal Jobs
Find hundreds of jobs for principals, assistant principals, and other school leadership roles.
View Jobs
Administrator Jobs
Over a thousand district-level jobs: superintendents, directors, more.
View Jobs
Support Staff Jobs
Search thousands of jobs, from paraprofessionals to counselors and more.
View Jobs

Read Next

School & District Management How Principals Are Shaping Education Policy Through Advocacy
Principals share advice for advocating to state and federal lawmakers on behalf of schools.
6 min read
Elementary, middle, high school principals from Missouri met senior staffers at R-Rep. Eric Schmitt's office on March 12, 2025.
Principals from Missouri met senior staffers at Republican Rep. Eric Schmitt's office on March 12, 2025. School leaders say advocacy is an important part of their job.
Courtesy of Jenny Hayes
School & District Management What the Future Holds for Summer School as Federal Aid Dries Up
Summer programs have been a go-to strategy to catch kids up and accelerate their learning. Will districts keep them with no more relief aid?
5 min read
Photo of high school students walking into class.
E+
School & District Management Infographic 9 Charts That Show the Lasting Effects of COVID on Schools
Key data on some of the move consequential changes, five years later.
3 min read
Illustration of Covid-19 impacting 3 years of school
Vanessa Solis/Education Week and Getty Images
School & District Management Opinion I Wear a Suit to School Every Day. Here's Why
You can suit up, dress down, or mix it up—but remember that what you wear sends a powerful message.
2 min read
A man in a suit exudes confidence and authority.
Vanessa Solis/Education Week via Canva