Cookie Policy

What Are Cookies

Cookies are small text files that a website places on your computer, smartphone, or other device when you visit it. They are stored in your browser and sent back to the website on subsequent visits, allowing the site to recognize your browser and remember certain information about your preferences or actions.

Cookies serve a variety of functions. Some are necessary for a website to work at all. Others store preferences so that the site behaves the way you've configured it. Analytics cookies help website operators understand how visitors interact with content. Each type serves a different purpose and has a different relationship to your privacy.

Cookies are not programs and cannot execute code or carry viruses. They are simply text data files. However, because they can store information associated with your browser session, they are subject to privacy law in many jurisdictions. We treat them accordingly.

Types of Cookies This Site Uses

We use a limited set of cookie categories on this website. Our approach is to use only what is necessary for operation and what helps us improve the educational experience for visitors. We do not use advertising cookies, tracking cookies for cross-site profiling, or social media cookies.

Cookies can also be categorized by duration. Session cookies are temporary and expire when you close your browser. Persistent cookies remain on your device for a set period or until you delete them. Both types are used on this Site for the purposes described below.

Essential Cookies

Essential cookies are those that are strictly necessary for the website to function. Without them, you would not be able to navigate the Site or use its features properly. Because they are necessary, they are placed without requiring your consent under applicable law.

The essential cookies on this Site include:

Cookie consent preference cookie (tde_consent): This cookie stores your cookie consent choices so that you are not shown the consent dialog on every page visit. It is set by our own JavaScript and stored on your device for up to 180 days. It contains only a record of your consent choices (accepted, declined, or custom selections) and does not contain personal data.

We do not use session authentication cookies or shopping cart cookies because this Site does not have user accounts or e-commerce features. If you block essential cookies through your browser settings, some aspects of the Site may not function as intended.

Analytics Cookies

With your consent, we use analytics cookies to collect aggregated information about how visitors interact with our website. This helps us understand which educational topics attract the most interest, how visitors navigate between pages, and whether there are technical issues affecting the user experience.

Analytics cookies do not identify individual visitors. The information collected is aggregated and used only for the internal purpose of improving our content and site structure. We do not use analytics data for advertising, retargeting, or to build profiles of individual users.

If you have consented to analytics cookies but later change your mind, you can withdraw consent through the cookie preferences interface. On your next visit, analytics cookies will not be placed. Previously placed analytics cookies may remain in your browser until their natural expiry or until you delete them through your browser settings.

Third-Party Cookies

Some content embedded on our Site may cause third-party cookies to be set by those third parties. This includes the Google Maps iframe on our contact page, which may set cookies from Google when it loads. We also load fonts and scripts from third-party CDNs (Content Delivery Networks), which may set their own performance or analytics cookies.

We do not have direct control over third-party cookies. These are governed by the privacy and cookie policies of the respective third parties. We encourage you to review Google's cookie policy at policies.google.com/technologies/cookies for information about Google's cookies.

If analytics is enabled, a third-party analytics provider may set one or more cookies. The specific cookies depend on the analytics service in use and may be updated over time. In all cases, data collected through analytics is used only in aggregate form and is not used to identify individual visitors.

Managing Your Cookie Preferences

You have several options for managing cookies:

Through our consent interface: When you first visit our website, you are presented with a cookie consent dialog. You can choose to accept all cookies, decline non-essential cookies, or customize your selections by category. Your preference is saved and applied on subsequent visits. You can change your preferences at any time by clearing the tde_consent cookie from your browser and reloading the page.

Through your browser settings: All major browsers provide controls for managing cookies. You can typically find these in the browser's settings or preferences menu under privacy, security, or content settings. Browser-level controls allow you to block all cookies, block third-party cookies only, or receive a notification before cookies are set. Note that blocking essential cookies may affect the functionality of this and other websites.

Browser-specific instructions for managing cookies are available from the following sources: Chrome (support.google.com/chrome), Firefox (support.mozilla.org), Safari (support.apple.com), Edge (support.microsoft.com). These links are provided for reference; we are not responsible for the content of third-party support pages.

Through opt-out tools: For analytics services that participate in industry opt-out programs, you may be able to opt out through the Digital Advertising Alliance's opt-out tool at optout.aboutads.info or the Network Advertising Initiative at optout.networkadvertising.org.

Our Cookie Consent System

We have implemented a cookie consent interface that appears as a modal card in the lower-left corner of the browser window. This interface allows you to accept all cookies, decline non-essential cookies, or customize your preferences by category.

Your consent choice is stored in an essential cookie named tde_consent. This cookie contains a record of your preference and is valid for 180 days. After this period, you will be asked to confirm your preferences again. We do not use this consent record for any purpose other than determining whether to activate optional cookies on your device.

Analytics cookies are not activated unless you explicitly select "Accept All" or enable analytics in the "Customize" section. Declining cookies means only essential cookies are placed. This meets the standard for affirmative consent under applicable US state privacy laws that require opt-in or opt-out mechanisms for non-essential data collection.

Updates to This Cookie Policy

We may update this Cookie Policy from time to time as our use of cookies changes or as legal requirements evolve. The "Last Updated" date at the top of this document indicates when it was most recently revised. We encourage you to check back periodically.

If we introduce new cookie categories or make significant changes to how we use cookies, we will update this policy before implementing those changes and, where appropriate, present a new consent request to Site visitors.

Contact Us About This Policy

If you have questions about this Cookie Policy or about how we use cookies, please contact us: