AI Essay Grader for Teachers | PaperGraderPro - Grade 10x Faster

# PaperGraderPro Documentation ## Overview PaperGraderPro is an AI-powered paper grading platform designed to help educators grade essays and text-based assessments more efficiently. The platform uses advanced language models to provide consistent, high-quality feedback while saving teachers valuable time. ## Core Features ### Assessment Creation - Create custom grading rubrics through an intuitive step-by-step wizard - Upload existing rubrics or create new ones with guided builder - Support for various education levels and subjects - Flexible rubric system for different assessment needs ### AI-Powered Grading - Smart AI grading using advanced language models - Customizable feedback generation with controlled tone and detail level - Support for multiple file formats (PDF, DOCX, TXT) - Bulk processing capabilities for entire classes ### Results & Analytics - Detailed student feedback with personalized improvement suggestions - Performance analytics for identifying trends and learning gaps - Export options for results (CSV, PDF) - Direct student communication features ## Technical Stack - Next.js (App Router) - TypeScript - Shadcn components - PostgreSQL database - LLM integration - Payment processing ## Key Endpoints - /api/assessments (CRUD operations) - /api/create-assessment - /api/extract-text/ - /api/grade-exams/ (LLM-based grading) - /api/grading-session-analysis/ - /api/payments/webhook ## Security & Privacy - GDPR compliance - Secure file handling - Protected routes via Next.js middleware - Authentication and authorization - Secure file storage ## Subscription Tiers - Free tier: 1 custom rubric + 5 grading runs - Pro tier: 1000 runs per month