Privacy Policy

Student Accounts

Student accounts are created and managed through schools. We collect:

• First name and last name
• Username
• Password (securely managed and never stored in plain text)

A student never needs an email address.

Students can always log in using a username and password provided or managed by their school. Whether students may also sign in through Google or ClassLink is the school's decision, not Algebro's and not the student's: Google sign-in is available unless a school administrator turns it off, and ClassLink only if the school connects it. Both options are described below. Both carry an email address, which only our sign-in provider (Clerk) holds; Algebro keeps no student email address in its own records.

Optional Google Sign-In for Students (School-Controlled)

School administrators have a “Google sign-in for students” setting on their Algebro dashboard. It is on by default, and a school administrator can turn it off at any time. While it is on, each student at that school may choose to create their Algebro account with their school Google account (after entering their teacher's class code; a personal Gmail address is refused), or to connect a Google account to the Algebro account they already have, and then sign in with the Google button instead of typing a password. Username and password stays available, and nothing changes for students who do not use Google.

When a student signs up with or connects a Google account, our sign-in provider (Clerk) receives and stores that Google account's email address, name, and profile picture. We use these details only to authenticate the student. They are not shown to other students, are never used to send email (students never receive email from Algebro), and are not shared with anyone else. Algebro does not copy the address into its own database. We do not access any other Google account data.

A school administrator can turn the setting off at any time. Turning it off hides the Google option at sign-up and in the Manage account menu; students who already use Google keep their Google sign-in until the connection is removed. While the setting is on, a student can disconnect the Google account from the Manage account menu, a teacher can give any student a password to sign in with instead, and a school can ask us to remove a connection at any time.

ClassLink Single Sign-On

Schools that use ClassLink can choose to let students sign in from LaunchPad instead of, or alongside, a username and password. A student who signs in that way is identified to Algebro by the school's ClassLink account, which includes the student's name and school-issued email address, the student's ClassLink user ID, the school's ClassLink tenant ID, and the role ClassLink reports for the account. Our sign-in provider (Clerk) holds the email address and those three ClassLink details to identify the account. Algebro does not copy the email address into its own database and never uses it to contact the student. A school that does not connect ClassLink to Algebro sends us nothing.

Teacher Accounts

Teachers sign up with an email address, normally their school one, or with Google or ClassLink. We use it to sign them in and to reach them about their account. We collect:

• First name and last name
• Email address
• Password, unless they sign in with Google or ClassLink (handled by Clerk)
• Username, if the account has one

Parent Accounts

Parents and guardians can create an account by signing up with an email address or Google account. Parents can create student profiles for their children to access the platform. By creating a student profile, the parent provides direct verifiable parental consent (COPPA) for their child's data to be collected as described in this policy. We collect:

• Parent email address (used for login and account management)
• Parent name (first and last)
• Student profile first names (chosen by the parent)
• Payment-related metadata (Stripe customer ID, subscription status)

Credit card numbers and payment method details are handled entirely by Stripe and never touch Algebro's servers.

Stripe is used only for parent subscription billing. Students, teachers, and school-issued accounts do not interact with Stripe and no payment information is collected from them.

Learning & Progress Data

As students use Algebro, we collect educational data, including:

• Lesson progress and completion
• Quiz scores and attempts
• Practice attempts and results
• Student answers to questions
• Timestamps related to activity completion
• Time on task (described below)

This data is used to show students their learning progress, provide teachers insight into class performance, and support instructional feedback.

Time on task. On learning pages (such as lessons, practice, quizzes, assignments, live games, the FAST practice test, the diagnostic, the placement test and the study plan), Algebro counts the time a student is actively working: the tab has to be open and in front, with a click, key press, scroll or touch in the last two minutes. It keeps one row per student per school day: the active minutes (capped at 6 hours), how many activities were finished, and the time of the last count. It does not record which page or what was on screen. It shows teachers when a student last worked and feeds streaks and achievements.

Virtual Currency (BroCoins)

Students may earn BroCoins by completing lessons, quizzes, and practice sessions. We track BroCoin balances, earning events, and spending on virtual items (themes and cosmetic features).

BroCoins:

• Have no real-world monetary value
• Cannot be purchased or exchanged for money
• Do not affect academic grades or evaluations

Automatically Collected Data

We use Vercel Analytics and Vercel Speed Insights to monitor platform performance. This may include page views, load times, error rates, and IP addresses.

This data is used solely for reliability, performance monitoring, and improving the educational experience. It does not involve student profiling or advertising.

Algebro's own database stores an IP address in one place: the counters that limit repeated attempts on the public sign-up and invite pages, which count attempts per address to block abuse. Those counters are cleared after about 7 days. IP addresses also reach Vercel, which hosts the site, and Better Stack when an error report is sent from a browser.

Problem Reports

Students and teachers can use “Report a problem” to tell me something is broken. We keep what they type (up to 2,000 characters) as a support ticket, with the page they were on, their browser type, their account ID, role and school, and a copy is emailed to me. When a student's account is deleted, the report stays, but the account ID and browser details are removed from it, so it no longer points to the student's account.

Cookies

Algebro uses a small number of cookies that are strictly necessary for the platform to function. We do not use advertising cookies, tracking cookies, or third-party marketing cookies.

• Authentication cookies (set by Clerk): used to keep you signed in and maintain your session. These are essential for the platform to work.
• Active profile cookie (algebro-active-profile): used for parent accounts only. When a parent selects a student profile, this cookie stores the selected profile ID so the platform knows which child's data to display. It contains only an internal profile identifier—no names, emails, or other personal information. This cookie is HTTP-only, secure in production, and persists for up to 1 year.
• Invite cookie (algebro-invite): holds the code from an invite link while the person signs up, so the link never sits in the address bar. It is HTTP-only (page scripts cannot read it), secure in production, and expires two hours after the link is opened, or sooner once the account is made.
• Sign-up step cookie (algebro-signup-intent): remembers which kind of account (student, teacher, parent or school administrator) a person was creating when they left for Google's sign-in screen, so they come back to the right step. It holds only that word and expires after 30 minutes.
• Teacher report cookie (algebro-teacher-sections): teachers only. It remembers which sections of the class report pages a teacher has hidden, as short section codes, and lasts 1 year.
• Preview and staff cookies: a teacher previewing the student view gets algebro-teacher-preview (HTTP-only, up to 4 hours). Algebro's own staff tools set short-lived HTTP-only cookies in staff browsers only.

By using Algebro, you consent to the use of these strictly necessary cookies. Because these cookies are required for the platform to operate, they cannot be disabled.

Live Games

During a live classroom game, the projected screen and the other players see each player's first name and last initial (or username, if no name is on file) and their score. A game hosted for a class can be joined only by students in that class.

Parent Link

A student with a school account can make a one-time code (it expires after an hour) and give it to a parent or guardian, and up to four adults can be linked to one student. A linked adult sees that student's school work and progress: results by skill, FAST practice and diagnostic results, working levels, achievements, and the last day they worked. The student or the parent can remove a link at any time. Parent Link is on unless the school turns it off, and turning it off cuts every linked parent's access at that school.

Parent Link Plus, paid by the parent through Stripe, lets a linked parent turn on a weekly review set for that student: Algebro builds it from the questions the student has been missing and assigns it to the student directly, and the parent sees how it went. A school can turn Parent Link Plus off separately.

School Official Designation

Algebro operates as a “school official” with a “legitimate educational interest” in student education records under the FERPA school-official exception (34 CFR § 99.31(a)(1)). Algebro performs an institutional service or function for which the school would otherwise use its own employees — specifically, providing standards-aligned math instruction, practice, assessment, and progress reporting. In that role, Algebro:

• Is under the direct control of the school with respect to the use and maintenance of education records;
• Is subject to the requirements of 34 CFR § 99.33(a) governing the use and redisclosure of personally identifiable information from education records; and
• Uses education records only for the purposes authorized by the school or district.

Ownership and Use of Education Records

Education records remain the property of the school or district. Algebro does not sell, rent, or disclose education records to any third party except: (a) to subprocessors contractually bound to protect the data; (b) as directed by the school or district; (c) as required by law; or (d) in the event of a merger, acquisition, or other business transfer, in which case the receiving entity must agree to honor the commitments in this policy. Algebro does not use education records to build advertising profiles or to target advertising.

Parental Access Through the School

Under FERPA and Florida's student education records law (Fla. Stat. § 1002.22), parents and eligible students have the right to inspect and review education records. When Algebro is operating under a school agreement, these rights are exercised through the school or district. Parents should contact their child's school to request access, correction, or deletion of records; the school can then forward the request to Algebro, and we will respond in accordance with our agreement with the school.

School Consent Model

Student accounts are created through schools using class access codes provided by teachers. Under COPPA's school consent exception (16 CFR 312.5(c)(4)), schools may consent to the collection of student information on behalf of parents for educational purposes only. Schools are responsible for providing parents with notice of Algebro's data practices and obtaining any required parental consent before distributing class access codes to students.

Parent Direct Consent Model

For student profiles created by parents through their parent account, the parent provides direct verifiable parental consent by creating the account and student profile. This is not the school consent exception—parents are directly consenting to the collection of their child's educational data. Parents can review their child's work from the parent dashboard, delete a practice profile they created, and remove their link to a school account. For a copy of the data, or to delete a school account's data, email privacy@algebro.ai.

Parental Rights

Parents and guardians have the right to:

• Review the personal information collected from their child
• Request deletion of their child's personal information
• Refuse further collection or use of their child's information
• Agree to the collection and use of their child's information without consenting to its disclosure to third parties (except as required for the educational service)

To exercise these rights, contact us at privacy@algebro.ai or contact your child's school directly.

Data Minimization

We collect only the minimum data required for educational use. We do not collect student phone numbers, physical addresses, or other contact information. Student email addresses are never required, and Algebro never asks a student for one. The school-controlled sign-in options described under Student Accounts (Google sign-in, which is on unless a school administrator turns it off, and ClassLink) carry one, which only our sign-in provider holds, for sign-in. Algebro keeps no student email address in its own records and never uses one to contact a student. We do not condition a student's participation on disclosing more personal information than is reasonably necessary.

Deletion on Request

Schools, districts, and parents may request deletion of student data at any time. On receipt of a verified request, Algebro deletes the covered student information, usually immediately and always within 30 days of the request, subject to limited exceptions required by law (for example, records we must retain for tax or audit purposes). When a school's or district's agreement with Algebro ends, Algebro deletes its students' covered information within 60 days.

Deleted data can remain in our database provider’s encrypted backups for up to 7 days before they roll off. The login provider (Clerk) removes a deleted login within 90 days.

Deletion After Student Unenrollment (School Use)

When Algebro is used under an agreement with a school or district, Algebro will delete a student's covered information within 30 days after we are notified that the student is no longer enrolled in or being served by the school, unless the school or parent directs otherwise or retention is required by law. Specific deletion timelines may be set in the district's data privacy agreement with Algebro.

Account Inactivity (Parent Direct Use)

For parent-created student profiles not operating under a school agreement, Algebro does not delete a profile automatically when an account goes inactive. The profile and its data are kept until the parent deletes the profile from the parent dashboard or asks us to delete it.

Parents and Guardians

Parents and guardians have the right to:

• Review the personal information Algebro has collected from their child
• Receive a copy of that information in a portable format (data export), by emailing privacy@algebro.ai
• Request correction of inaccurate data
• Request deletion of their child's data
• Refuse further collection or use of their child's information
• Withdraw any consent previously provided under COPPA

Parents can review their child's work and remove their link from the parent dashboard, and can delete a practice profile they created there. For a copy of the data, or to delete it, email privacy@algebro.ai. When Algebro is operating under a school agreement, requests should generally be submitted through the school; the school may forward the request to Algebro.

Students Age 13 and Older

Students who are 13 or older may request to review, correct, or delete their own data by contacting Algebro directly at privacy@algebro.ai, or by asking a parent, guardian, or teacher to submit the request on their behalf. When Algebro is used under a school agreement, access requests are generally coordinated through the school under FERPA. Students age 13 or older do not receive an expanded data collection footprint — we still collect the minimum information needed to operate the service.

California Residents (CCPA / CPRA)

California residents may have additional rights under the California Consumer Privacy Act (CCPA), as amended by the California Privacy Rights Act (CPRA), including the rights to know, delete, correct, and opt out of the “sale” or “sharing” of personal information. Algebro does not sell or share personal information as those terms are defined under CCPA/CPRA. California residents may submit requests at privacy@algebro.ai.

No Discrimination

Algebro will not discriminate against any user for exercising their privacy rights — for example, by denying service or charging a different price — except where the exercise of a right makes it impossible for us to provide the service (for example, if all student data is deleted, practice and progress tracking can no longer function).