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Privacy & Security 7 min read

Privacy-First Approach to EdTech

Why local data storage is the future of educational technology and how it protects both educators and students in an increasingly connected world.

Kent Merrell

Founder, Digital Extensions • January 12, 2025

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⚠️ The Current State of EdTech Privacy

In 2024, over 400 educational data breaches exposed the personal information of millions of students. The average cost of each breach was $4.88 million, but the real cost—student privacy—is immeasurable.

As an educator, you've probably heard the promises: "Move to the cloud! Sync everywhere! Access from any device!" But what they don't tell you is that every convenience comes with a privacy cost. Every time student data leaves your device, it becomes vulnerable.

There's a better way. Privacy-first design isn't just possible in educational technology—it's essential. And it doesn't mean sacrificing functionality or convenience.

The Hidden Cost of "Free" EdTech

When an educational technology company offers their service for "free," ask yourself: how do they make money? The answer is often uncomfortable: your students' data is the product being sold.

What "Anonymous" Data Really Reveals

Even when companies claim data is "anonymized," research shows that combining just a few data points can re-identify individuals with shocking accuracy:

  • 87% of Americans can be uniquely identified with just three data points: zip code, gender, and date of birth
  • Student performance patterns combined with timing data can reveal learning disabilities
  • Login patterns can indicate home situations and family dynamics
  • Assignment completion times may reveal personal struggles or advantages

FERPA: More Than Just Compliance

The Family Educational Rights and Privacy Act (FERPA) isn't just a checkbox for schools—it's a fundamental protection for students and families. But many cloud-based EdTech solutions create compliance headaches.

🚨 Cloud-Based Challenges

  • • Data Processing Agreements required
  • • Third-party subprocessors to manage
  • • International data transfers to monitor
  • • Breach notification requirements
  • • Regular compliance audits needed

✅ Local-Only Benefits

  • • No data processing agreements
  • • No third-party access concerns
  • • No international transfer issues
  • • Simplified breach prevention
  • • Inherent compliance

The Local-First Alternative

Local-first software keeps your data on your device. It's not a step backward—it's a leap forward into a more secure, private, and reliable future.

Core Principles of Privacy-First Design

1

Data Minimization

Collect only the data absolutely necessary for functionality

2

Local Storage

Keep sensitive data on the user's device under their control

3

End-to-End Encryption

When data must be transmitted, encrypt it completely

4

User Control

Users own their data and control how it's used

5

Transparency

Clear, honest communication about data practices

Debunking the "Convenience" Myth

"But I need to access my data from anywhere!" This is the most common objection to local-first software. But let's examine this assumption.

🤔 Questions to Ask Yourself

  • • How often do you actually grade from multiple devices?
  • • Is the convenience worth the privacy risk for your students?
  • • Would you be comfortable if your personal medical records were stored this way?
  • • What happens to your data if the company goes out of business?

For most educators, the honest answer is that they do 90% of their grading from one primary device. The "access from anywhere" feature is used rarely but compromises privacy constantly.

The Student Perspective

Students trust educators with their academic performance, personal struggles, and growth journeys. This trust comes with a responsibility to protect their privacy.

What Students Don't Know (But Should)

When you use cloud-based grading tools, student data often travels through:

  • Multiple data centers across different countries
  • Third-party analytics services for "product improvement"
  • Advertising networks for "relevant" marketing
  • AI training datasets to improve machine learning models

Each step increases vulnerability and reduces privacy, often without explicit consent.

Building Markers Helper: A Privacy-First Story

When I started building Markers Helper, my wife Leah was grading papers for online universities. She was required to use a cloud-based system that made both of us uncomfortable.

"These are real students with real struggles," she told me. "Their essays reveal personal challenges, family situations, learning difficulties. It doesn't feel right that this information is being stored on servers I don't control, processed by algorithms I can't see."

💡 The "Aha" Moment

That conversation changed everything. We realized that the most secure student data is data that never leaves the educator's control. No cloud storage, no data mining, no third-party access. Just the teacher, the student work, and the privacy they both deserve.

Practical Benefits of Going Local

Privacy-first design isn't just about protection—it offers practical advantages that improve your daily workflow.

⚡ Speed & Reliability

No internet required means no waiting for uploads, no sync errors, no "service temporarily unavailable" messages.

💰 Cost Predictability

One-time purchase instead of endless subscription fees that increase every year.

🎯 Focus

No ads, no "recommended features," no distractions—just the tools you need.

🔄 Data Portability

Export your data anytime, in any format. No vendor lock-in, no data hostage situations.

🛡️ Future-Proof

Your data remains accessible regardless of company changes, acquisitions, or shutdowns.

🏠 Compliance Simplicity

Meet FERPA, GDPR, and other privacy requirements by default, not by complex configuration.

Making the Switch

Transitioning to privacy-first tools doesn't have to be disruptive. Start with new assignments or new semesters. Many educators find that local-first tools actually improve their workflow.

Questions to Ask Before Choosing EdTech

  • Where is student data stored? Look for "local only" or "on your device"
  • Who has access to the data? Avoid vague terms like "trusted partners"
  • How is data used for "product improvement"? This often means AI training on student work
  • What happens if you stop paying? Can you still access your data?
  • Is the privacy policy written in plain English? Complex policies often hide concerning practices

The Future is Private

Privacy-first design isn't a trend—it's the future of responsible technology. As awareness grows about data misuse and privacy violations, educators are demanding better solutions.

Students deserve educators who protect their privacy. Schools deserve tools that simplify compliance. Teachers deserve software that respects their professional judgment and personal values.

🌟 Join the Privacy-First Movement

Every educator who chooses privacy-first tools sends a message to the EdTech industry: student privacy is not negotiable. Convenience is not worth compromising the trust our students place in us.

The choice is yours. Continue with systems that treat student data as a commodity, or switch to tools that put privacy first. Your students—and their families—are counting on you to make the right decision.

Kent Merrell

Founder, Digital Extensions

Kent is passionate about creating software that helps humans extend their capabilities while respecting their privacy. He founded Digital Extensions with the mission of building tools that serve users, not collect data about them.