B27 Escola: Brazilian AI Tutoring Platform - Sell Project

B27 Escola is a Brazilian educational AI platform built in PHP, JavaScript and SQLite. It gives students a practical place to study school subjects in Portuguese, work through questions and build understanding. The working product includes a growing knowledge base with more than 159,000 entries, educational routing, progressive tutoring and publicly visible validation results. What buyers can see in the real product The gallery shows the published interface, typo clarification and confirmation, local algebra exercises, a five-question physics mock exam and progressive fraction tutoring. In the demonstrated tutoring flow, an incorrect answer receives feedback and a hint before the student's next attempt is checked exactly. The interface also includes writing support, study tools and a dedicated English section. Verified update — October 15, 2026 Changes were tested on Hostinger before deployment. The tested writing questions now retrieve relevant educational content instead of opening a generic school-level menu. The MUV explanation now states the constant-acceleration conditions, identifies the variables and includes a checked numerical example. The browser calculation shortcut was corrected so it handles only a complete simple operation: compound expressions go to the server instead of being reduced to their first operation. The tested sum 1/2 + 1/3 now returns 5/6. The update was checked with 22 requests across 11 remote QA scenarios, paired before/after controls and real browser flows. The gallery consists of 19 real screenshots: public pages and administrative demonstrations using isolated data in the actual application. QA did not consume student credits or make paid-provider calls. Some screens show different knowledge counts because the existing expansion process continues to run. Continuous validation and current limits Six validation engines support the platform's continuous validation workflow. The captured public round 127 shows three approved results, two inconclusive results and no technical failures. This is the result of that round, not a claim that every answer is approved or that inconclusive cases have been eliminated. The screenshots demonstrate the specific flows shown. Further work remains on explanation quality and conversation continuity. Paid-provider generation and final grading of all exercise and mock-exam types were not approved by this QA run. The English screenshot shows its interface; paid English generation was not tested. The presentation-page screenshot retains an older static beta label and knowledge count. This is a functioning beta product with documented progress and remaining development work. Technical foundation and sale The project combines the web interface, PHP routing and educational logic, a SQLite knowledge base, local educational content, AI-provider integrations, automated knowledge expansion, scheduled jobs and a validation system with public results. Source code, related data, interface assets, documentation and transfer assistance are included under the existing sale terms. The existing sale also includes the educational platform, English module, expansion and validation tools, cron setup, brand and domain. Existing handover terms remain unchanged. The project is pre-revenue and offered at US$10,000, negotiable. It gives a buyer a working foundation for a Brazilian education product without starting from scratch. Potential future directions include subscriptions, school dashboards, student progress tracking, teacher tools and additional languages; these are expansion opportunities rather than claims of existing features.