What this application is
Phosphor is an educational tool built to support coursework at Dartmouth College. It is a privately developed project and is not owned or operated by Dartmouth College. By using this application, you acknowledge the data practices described below.
What data we collect
- Account information: Your name and email address, provided via Google sign-in through Dartmouth's authentication.
- Quiz responses and scores: Your answers to quiz questions and the resulting grades.
- Unit completion records: Which units you have completed and when.
- Progress data: Your last visited unit, for navigation convenience.
- Chat interactions: Questions you ask the AI assistant and the responses generated, logged for rate limiting and quality monitoring.
- Lesson progress: Your progress through interactive lessons (stored in your browser only — not on our servers).
How your data is used
- To provide the core learning experience: quizzes, progress tracking, and AI-assisted chat.
- To allow your instructor to monitor class progress and completion rates.
- To enforce rate limits on the AI chat feature.
- Your data is never sold or used for advertising.
Third-party services
Your data is processed by the following external services:
- Supabase (database hosting): Stores your account, progress, and quiz data. Hosted on AWS infrastructure.
- Anthropic (Claude API): Quiz answers may be sent to Anthropic's API for AI grading. Chat questions and lesson interactions are processed by Claude.
- OpenAI: Your chat questions are converted into numerical embeddings (vectors) for content retrieval. OpenAI does not receive your identity.
- Dartmouth Chat API: Chat questions may be routed through Dartmouth's internal AI proxy service.
Each service processes data according to its own privacy policy and terms of service.
Who can see your data
- You can see your own progress, quiz results, and chat history.
- Your instructor and TAs can see your completion status and progress across units. They cannot see your individual chat conversations.
- The application developer has administrative access to the database for maintenance and debugging purposes.
- No other students can see your data.
Data retention
Your data is retained for the duration of the course and may be kept afterward for academic record purposes. If you would like your data deleted, contact your instructor or the application developer.
Your rights
- You may request a copy of all data associated with your account.
- You may request deletion of your data.
- Under FERPA, you have the right to inspect your education records held by Dartmouth College.
Security
Access to your data is protected by authentication and database-level row security policies. All connections use HTTPS encryption. However, no system is perfectly secure, and this application is provided as-is.
Contact
For questions about this privacy notice or to exercise your data rights, contact your course instructor or email the application developer.