The Company processes personal information for the following purposes. It will not be used for purposes other than those listed below, and if the purpose changes, necessary measures such as obtaining separate consent will be taken.

• Membership Management: Identification, age verification (parental consent for children under 14), prevention of unauthorized use.
• Service Provision: Personalized learning content, AI grading services, learning management via LMS integration (Google Classroom, MS Teams, etc.).
• LMS Integration: SSO via institutional accounts and synchronization of assignments/grades.
• Marketing: Development of new services and delivery of advertising information (with consent).
• Service Quality Improvement: Service quality improvement, performance optimization, AI function enhancement, system maintenance.

The Company collects the following personal information according to user type and service scenarios.

1. Member Registration Information

2. Information Collected During Service Use

The Company processes and retains personal information within the period agreed upon collection or as required by law.

• Member Info: Until withdrawal (except when investigations are pending).
• Service Records: Until service completion and settlement.

Legal Retention Periods:

• Contract/Subscription Records: 5 years (Act on Consumer Protection in E-commerce)
• Payment/Supply Records: 5 years
• Consumer Complaints/Disputes: 3 years
• Login Logs: 3 months (Protection of Communications Secrets Act)

The Company does not provide personal information to third parties without the user's consent, except where required by law or for investigative purposes.

Notice for US Users (CCPA): We do NOT sell your personal information.

The Company outsources data processing to ensure smooth service provision:

• Logistics: GS Networks, Lotte Global Logistics
• Payment: Kakao Pay, Toss Payments, Klaim
• Notifications: Naver Cloud (AlimTalk, SMS)
• Customer Support: Channel Corp (Channel Talk)
• Gifts: 11st (Gifticon)
• Infrastructure: Microsoft Azure, AWS (Hosting & Storage)
• Service Usage Records & Analysis: Meta, Google, PostHog, DataDog

Users may exercise their rights to access, correct, delete, or suspend processing of their personal information at any time. For children under 14, legal representatives may exercise these rights on their behalf.

When personal information becomes unnecessary due to expiration of retention period or fulfillment of purpose, the Company maintains no delay in destroying the data. Electronic files are permanently deleted, and physical records are shredded or incinerated.

The Company implements the following measures to ensure the security of personal information:

• Technical measures: Personal information is protected and stored in a separate region of the cloud system, and important data is protected using additional security features such as encryption of files and transmission data. The company regularly updates PC security to prevent computer viruses and implements cloud intrusion prevention policies to prevent external intrusions.
• Administrative measures: Personal information handling staff are limited to responsible persons and regular education on personal information protection obligations is conducted. Access permissions are managed to implement administrative measures.

To provide personalized services, the Company uses "cookies" to store and retrieve usage information. Cookies are small data files sent by the server to your browser and stored on your device's storage.

• Purpose of Use: Analysis of access frequency and visit time, identification of usage patterns and tracking, security management, service improvement, new service development, and provision of personalized services.
• Cookie Management: Users have the right to choose whether to install cookies. You can configure your web browser options to accept all cookies, prompt for confirmation each time, or reject all cookies.
• Refusal Consequences: If you reject cookies, some services requiring login may be difficult to use.

We may use third-party analytics services such as Google Analytics, Meta Pixel, and PostHog. These services use cookies to help us analyze how users use the website. Information generated by cookies about your use of the website (including your IP address) is transmitted to and stored by these service providers. They use this information to evaluate website usage, compile reports on website activity, and provide other services related to website activity and internet usage. These providers may also transfer this information to third parties where required to do so by law. They typically do not associate your IP address with any other data held by them.

You may refuse the use of cookies by selecting the appropriate settings on your browser. However, please note that if you do this you may not be able to use the full functionality of this website. By using this website, you acknowledge the processing of data about you by these analytics services in the manner and for the purposes set out above.

Note for US Users: For children under 13, we restrict third-party tracking in compliance with COPPA. However, we may use strictly limited analytics (e.g., PostHog) solely for "support for the internal operations of the website" (e.g., analytics, debugging, security) as permitted by FTC guidelines. We do NOT use such data for behavioral advertising or profiling.

For users in the US or using services affiliated with US educational institutions:

• FERPA (Family Educational Rights and Privacy Act): When processing education records on behalf of a school, the Company acts as a "School Official" with a legitimate educational interest. We do not disclose education records to third parties without prior written consent, except as permitted by FERPA.
• COPPA (Children's Online Privacy Protection Act): For children under 13, we collect personal information only with verifiable parental consent or consent from the school/teacher acting as the agent for the parent.
• Do Not Sell: We do NOT sell student personal information to any third parties.