Privacy Policy

Last Updated: January 3, 2026

1. Introduction

This Privacy Policy explains how Grade Calculator Extension ("we", "our", or "us") collects, uses, and discloses information about you when you use our website (https://gradecalculator.com) and our Chrome Extension (Powerschool Grade Calculator).

We are committed to protecting your privacy. The core principle of our service is that your grade data belongs to you and should stay on your device.

2. Information We Collect

2.1. Chrome Extension

The Powerschool Grade Calculator Extension is designed to work locally on your device.

  • No Personal Data Collection: We do not collect, transmit, or store any of your personal information, login credentials, or grade data on our servers.
  • Local Storage: The extension may store preferences (such as your GPA scale settings or custom grade weights) locally in your browser's storage using the `chrome.storage` API. This data never leaves your browser.
  • Grade Data: When you use the calculator features on PowerSchool, the extension reads the grade data directly from the DOM (the web page) to perform calculations. This happens entirely within your browser memory and is not sent anywhere.

2.2. Website

When you visit our website, we may collect minimal technical data:

  • Usage Data: We use PostHog to collect anonymous analytics about website traffic, such as pages visited, browser type, and time spent on the site. This data is not Personally Identifiable Information (PII) and helps us improve the user experience.
  • Cookies: Our website does not use tracking cookies for advertising purposes. We may use essential local storage to remember your calculator preferences (e.g., if you were last using the GPA calculator).

3. How We Use Your Information

Since we collect minimal to no personal information, our use of data is extremely limited:

  • To provide the functionality of the grade calculator tools.
  • To improve and optimize the performance of our website and extension.
  • To respond to user inquiries or support requests (if you email us).

4. Data Security

We take reasonable measures to protect the information we do not collect! But seriously, because your grade data and PowerSchool credentials never leave your local device, they are as secure as your own computer and browser. We have no access to them.

5. Third-Party Services

Our website acts as a tool that may link to or run on top of third-party websites (like PowerSchool). We are not affiliated with, endorsed by, or connected to PowerSchool Group LLC.

PowerSchool: When using the extension, you are interacting with the PowerSchool website. Your use of PowerSchool is subject to their own Privacy Policy and Terms of Service.

6. Changes to This Policy

We may update this Privacy Policy from time to time. If we make material changes, we will notify you by updating the date at the top of this policy and, where appropriate, providing notice through the extension or website.

7. Contact Us

If you have any questions about this Privacy Policy, please contact us at:
hi@gradecalculatorextension.com