Question: I'm looking for a platform that allows me to create digital quizzes and assignments from scratch, with features like auto-grading and instant feedback.

TeacherMade is an edtech platform that lets teachers convert print-based content into interactive digital lessons. It can convert existing Google Slides, Docs and PDFs into quizzes and assignments, and has tools like AI-generated content, auto-grading and instant feedback. It also integrates with common learning management systems and offers gamification and item analysis reports to keep students engaged and track progress. It offers several pricing tiers, including a 30-day free trial.

Another option is Formative, which has a variety of tools to build interactive assessments and lesson plans. It can convert PDFs and Google Docs into auto-graded quizzes and lets you add questions and multimedia to reading passages, including advanced math tools and real-time feedback. Formative can integrate with common learning management systems and has a free option, so it's good for a variety of needs.

If you're looking for a more basic quiz creation interface, Quiz Maker is an online tool to build custom quizzes. It can handle multiple quiz formats and has features like automated grading, AI-based feedback and collaboration tools. Quiz Maker can also integrate with more than 3,000 other apps with Zapier and has several pricing tiers for different needs.

Last, QuizUp is an AI-based quiz creation and grading system that has a simple quiz builder and immediate feedback. It can handle text blocks, titles and code, and can grade answers quickly. QuizUp offers a free plan and three paid plans, so it's good for teachers who want to automate grading and give students immediate feedback.