Center Desk Drawer: Privacy Policy
Effective date: September 13, 2026
Last updated: September 13, 2026
Who We Are
Center Desk Drawer is operated by Model B LLC ("Center Desk Drawer," "we," "us"). Center Desk Drawer works differently from school-licensed software: an individual teacher signs up and creates an account directly, and that teacher is our customer. A school or district doesn't need to approve, purchase, or even be aware of a teacher's use of Center Desk Drawer, and in most cases won't have a direct relationship with us at all.
If your school or district has its own policies about using outside classroom tools, following them is your responsibility as the account holder. We're glad to work directly with a school or district that wants to formally review, approve, or put an agreement in place for Center Desk Drawer. See Contact Us below.
Information We Collect
Your Account
When you create an account, we collect your name (if provided), email address, and, if you sign in with Google or Microsoft, your profile photo and account ID from that provider. If you sign in with a password instead, we store a securely hashed version of it. We never store or have access to your actual password.
Your Students
Only what you choose to enter to use the product: a student's first name and last initial. There's no field for a student's full last name, date of birth, ID number, or photo.
Reading Activity
Books logged for a student (title, author, and either pages read or whole-book completion), the Plot Points earned from that activity, and any Plot Twist achievements unlocked. If you search for a book by title, the text you type is sent to Google Books to look up matching titles (see How We Share Information).
The Family Link
You can generate a private link and QR code for a student so a parent or guardian can view that student's points and log reading at home, without creating an account. This is designed for a parent or guardian to use on the student's behalf, not for the student to use directly. We don't ask for or collect the parent's name, email, or any other identifying information. The link is a random token tied to that student, and using it doesn't create any record of who used it.
We have no way to verify who actually uses a shared link. If that's a concern for a specific student, don't generate or share their link. Every other part of Center Desk Drawer works fully without it.
Payment Information
If you upgrade to a paid plan, billing is handled by Stripe. We don't see or store your full card number.
How We Use Information
We use the information above solely to provide, maintain, and support Center Desk Drawer for you. We do not sell personal information, and we do not use student data to serve advertising.
Who Can Access Information
- You, for classes you own.
- A collaborator (like a co-teacher or aide) you've explicitly added to a class, limited to that class.
- A parent or guardian using a family link you've generated, limited to that one student's information.
- Our team, only as needed to provide support you've requested or to maintain the platform.
How We Share Information
We don't sell personal information. We share information only with the service providers below, and only to the extent necessary for them to perform their function.
| Service Provider | Purpose |
|---|---|
| Vercel | Application hosting |
| Supabase | Database, authentication, and file storage |
| Stripe | Billing, for teachers on a paid plan |
| Sign-in (if you choose Google) and book search/lookup via Google Books | |
| Microsoft | Sign-in (if you choose Microsoft) |
This list will be updated as our infrastructure evolves.
We may also disclose information if required by law, or to protect the rights, property, or safety of Center Desk Drawer, our users, or others.
Data Retention & Deletion
We keep your account and classroom data for as long as your account is active. You can delete your own account any time from Account in the dashboard, which is immediate — or contact us at hello@modelb.app and we'll do it for you. See our Data Retention & Deletion page for exactly what deletion does, including how a class shared with a Teacher Bestie collaborator is handled.
Children's Privacy
Center Desk Drawer is a tool for teachers, not for children. Students don't create accounts. The family experience is designed for a parent or guardian to use on a student's behalf, and we do not knowingly collect personal information directly from children under 13. If you believe a child has used Center Desk Drawer directly, or that we've inadvertently collected information directly from a child, contact us at hello@modelb.app and we'll investigate and delete it.
For more detail, see our COPPA Commitment, FERPA Commitment, and Student Data Privacy pages.
Your Responsibilities
As the person entering student information, you're responsible for complying with your school's or district's own policies about using outside classroom tools, and with FERPA, COPPA, and any state student privacy law that applies to you. We built Center Desk Drawer to need as little student information as possible (a first name and last initial) to help with that, but the decision to use it, and what you enter, is yours.
Security
Center Desk Drawer is built on Supabase and Vercel, which encrypt data in transit and at rest by default. Access is limited to your own account, anyone you've added as a collaborator, and family-link holders limited to their one student. We're a small, early-stage team and haven't yet completed a formal third-party security audit. We'd rather say that plainly than imply one has happened. If security is a specific concern for you or your school, contact us and we're glad to talk it through.
Changes to This Policy
We may update this policy from time to time. If we make material changes, we'll update the "Last updated" date above and, where practical, notify you directly.
Contact Us
Questions about this policy or how Center Desk Drawer handles data can be sent to hello@modelb.app.