Cookie Notice
Last Updated: 23rd July 2026
SOPHOS EDUCATION LTD (trading as “Studia”) | Company No. 14321333
10 St. Edmunds Square, London, England, SW13 8SA
1. What Are Cookies?
Our website and platform use cookies to distinguish you from other users and to improve your experience. This notice explains what cookies are, which ones we use, and how you can control them.
A cookie is a small file of letters and numbers that we store on your browser or on the hard drive of your device. Cookies contain information that is transferred to your device and stored there. They help us provide you with a good experience when you use Studia and allow us to improve our Platform.
Information for Parents and Guardians
Because Studia is used by children, we have taken care to use only the cookies that are necessary to run and improve the Platform. We do not use advertising or targeting cookies, and we do not share cookie data with advertisers.
2. Types of Cookies We Use
We use the following categories of cookies:
Strictly Necessary Cookies
These cookies are required for the Platform to function. They enable core features such as logging in, staying logged in, processing payments securely, and protecting against certain types of online attacks. You cannot opt out of strictly necessary cookies — without them, the Platform cannot work properly.
Performance and Analytics Cookies
These cookies allow us to recognise and count the number of visitors and to understand how people use the Platform — for example, which pages are visited most often and whether any errors occur. All information collected is aggregated and anonymised where possible. This helps us improve the way the Platform works. These cookies require your consent and can be switched off in your cookie preferences.
Functionality Cookies
These cookies remember your preferences and settings — for example, your subject filters, display preferences, and where you left off in a video. They make your experience more convenient and personalised. These cookies require your consent and can be switched off, though doing so may affect some Platform features.
Marketing Cookies
These cookies support our own email marketing. When our email marketing provider, Klaviyo, is enabled, it may set cookies to power onsite sign-up forms and popups and to recognise you across visits so our marketing communications are relevant. We do not use advertising, ad-network, or cross-site tracking cookies, and we do not share cookie data with advertisers. These cookies require your consent and can be switched off in your cookie preferences.
3. Cookies We Use
The table below lists the specific cookies in use on the Studia Platform and website. Where we refer to cookies by pattern (e.g. ph_*_posthog), this means there may be several related cookies sharing the same prefix. Some entries are not traditional cookies but equivalent browser storage (localStorage and sessionStorage) used by our providers — we list these here too, so this notice covers everything a provider stores on your device.
| Cookie Name | Purpose | Duration | Category | Provider |
|---|---|---|---|---|
__session | Set by Clerk (our authentication provider) to maintain your signed-in session and keep you securely logged in as you move between pages | Session | Strictly Necessary | Clerk |
__client_uat | Set by Clerk to record whether you have an active session, so the Platform knows if you are signed in (set to 0 when you are signed out) | Session | Strictly Necessary | Clerk |
CookieConsent | Set by Cookiebot to record your cookie consent choices so we don't ask you again | 1 year | Strictly Necessary | Cookiebot |
__stripe_mid | Set by Stripe (our payment provider) to prevent fraudulent payment transactions | 1 year | Strictly Necessary | Stripe |
__stripe_sid | Set by Stripe to maintain your payment session when booking a 1-to-1 session | Session | Strictly Necessary | Stripe |
studia_support_active | Set on .studia.iowhen you start a support conversation on our Help Centre (help.studia.io). It contains no personal data — its presence is the only signal — and tells the Platform to load the support chat widget so your conversation can continue as you browse | 7 days, refreshed on activity | Strictly Necessary | Studia |
_ga | Google Analytics 4 — distinguishes unique users and supports aggregate usage analytics across the Platform | 14 months | Performance/Analytics | Google LLC |
_ga_* | Google Analytics 4 — per-property session state used by GA4 to aggregate usage analytics | 14 months | Performance/Analytics | Google LLC |
ph_*_posthog | PostHog — stores a device identifier and session state so we can understand aggregate feature usage and surface technical issues | 12 months | Performance/Analytics | PostHog Inc. |
studia_prefs | Remembers your platform preferences, such as subject filters and display settings | 6 months | Functionality | Studia |
studia_lang | Remembers your language or region preference | 1 year | Functionality | Studia |
daily_livestream_view | Tracks which Livestream replays you have watched to resume playback at the right point | 30 days | Functionality | Studia |
video_* | Set by our video streaming provider to maintain video session quality and buffering | Session | Functionality | Mux |
<integrationId>.appUserId | Stored by the Zendesk support chat widget to identify your support conversation, so an open conversation can continue as you move between the Help Centre and the Platform | Persistent (browser storage) | Functionality | Zendesk |
<integrationId>.clientId | Stored by the Zendesk support chat widget to identify your browser to the support conversation service | Persistent (browser storage) | Functionality | Zendesk |
<integrationId>.sessionToken | Stored by the Zendesk support chat widget to keep your support conversation session active without asking you to sign in again | Persistent (browser storage) | Functionality | Zendesk |
ZD-* | Additional Zendesk support widget state — for example, whether the chat window is open — stored while the support widget is active | Persistent (browser storage) | Functionality | Zendesk |
Our authentication provider, Clerk, may set additional strictly necessary cookies (for example, in development environments) to manage your sign-in session securely. Our consent banner, provided by Cookiebot, automatically detects the cookies in use and keeps this list up to date.
4. Third-Party Cookies
Some cookies on the Platform are set by third-party providers that we use to run Studia. These are:
| Provider | Purpose | Privacy Policy |
|---|---|---|
| Cookiebot (Usercentrics) | Consent management platform. Sets the CookieConsent cookie to store your cookie preferences and blocks optional cookies until you give consent. Strictly necessary. | cookiebot.com/en/privacy-policy |
| Clerk | Authentication provider. Sets strictly necessary cookies (including __session and __client_uat) to keep you securely signed in. | clerk.com/legal/privacy |
| Stripe | Payment processing provider. Sets cookies to detect fraud and maintain secure payment sessions. | stripe.com/privacy |
| Google Analytics 4 (Google LLC) | Aggregate usage analytics. Collects anonymised, aggregated data so we can understand how the Platform is being used and improve it. Retention: 14 months. Processed in the United States; transfers safeguarded by the EU-US Data Privacy Framework (Google self-certified since July 2023) with Standard Contractual Clauses as a backup. | policies.google.com/privacy |
| PostHog (PostHog Inc.) | Product analytics. Used to track feature usage within the Platform and identify technical issues. Retention: 12 months. Hosted in the EU via eu.posthog.com (Frankfurt) so event data does not transfer outside the EEA. | posthog.com/privacy |
| Mux (Video streaming) | Video infrastructure provider. May set session cookies to maintain video quality. These are strictly necessary for Livestreams and 1-to-1 Sessions to function. | mux.com/privacy |
| Zendesk | Customer support provider. The Zendesk support chat widget stores functionality keys in your browser (listed above) so a support conversation started on our Help Centre (help.studia.io) can continue on the Platform. These are set only after you consent to functionality cookies, and only while you have an open support conversation. | zendesk.com/company/agreements-and-terms/privacy-notice |
| Klaviyo (Klaviyo, Inc.) | Email marketing provider. When onsite tracking is enabled, Klaviyo may set marketing cookies to power sign-up forms and popups and to link onsite activity to our email marketing. These are used only for Studia's own marketing, never for third-party advertising, and are set only after you consent to marketing cookies. | klaviyo.com/legal/privacy |
We do not permit our third-party providers to use cookies set on our Platform for their own advertising or marketing purposes.
5. Your Choices About Cookies
You have control over which non-essential cookies we set. Here is how you can manage them:
Cookie Consent Banner
Our cookie consent banner is provided by Cookiebot (a consent management platform from Usercentrics). It records your choices in a strictly necessary cookie called CookieConsent and automatically blocks optional cookies until you consent. When you first visit Studia, you will see the banner. You can choose to:
- Accept all cookies— allows all cookies including analytics, functionality, and marketing cookies.
- Accept necessary cookies only— only strictly necessary cookies will be set. Analytics, functionality, and marketing cookies will be blocked.
- Manage preferences— choose which categories of non-essential cookies to allow.
Changing Your Preferences
You can update your cookie preferences at any time through the cookie settings link in the footer of the Platform, or by contacting us at privacy@studia.io.
Browser Settings
You can also choose to block or delete cookies through your browser settings. Please note that if you block all cookies (including strictly necessary cookies), you may not be able to log in or use some parts of the Platform. Instructions for managing cookies in common browsers can be found at:
- Google Chrome: Manage cookies in Chrome
- Mozilla Firefox: Manage cookies in Firefox
- Safari: Manage cookies in Safari
- Microsoft Edge: Manage cookies in Edge
For Parents and Guardians
If your child is under 13, you manage cookie preferences on their behalf through your parental account settings. If you have any questions about how cookies affect your child's account, please contact us at privacy@studia.io.
6. Changes to This Notice
We may update this Cookie Notice from time to time — for example, if we add new platform features that require additional cookies, or if providers change their cookies. We will post any changes on this page with an updated date at the top. Where changes are material, we will notify you by email or through the Platform.
7. More Information
For more information about how we collect, use, and store personal data more broadly, please see our Privacy Policy.
For information about your child's data specifically, please see our Children's Privacy Notice.
If you have any questions or concerns about our use of cookies, please contact us at privacy@studia.io.
Contact Information
| Purpose | Contact |
|---|---|
| Privacy and cookie questions | privacy@studia.io |
| General enquiries | support@studia.io |
| Legal matters | legal@studia.io |
| Post | Studia (Sophos Education Ltd), 10 St. Edmunds Square, London, England, SW13 8SA |
This Cookie Notice was last reviewed on 23rd July 2026. Studia recommends that you seek independent advice if you are unsure about any of its provisions.