Use of AI-assisted writing tools for student self-assessment at school: survey on teachers’ perceptions and practices

The best AI writing tools for students are Grammarly (grammar, clarity, and style), Quillbot (paraphrasing and fluency), ChatGPT (brainstorming, feedback, and structural suggestions), Hemingway Editor (readability), and Wordtune (sentence-level rewriting). Grammarly is the most widely used because it integrates with browsers, Google Docs, and Microsoft Word.

Studies show AI writing tools improve grammatical correctness and readability scores, which contributes to higher grades on assignments where these are evaluated. Students who use AI for feedback on drafts — rather than to generate entire essays — show greater improvement in writing quality than those who submit AI-generated text without revision.

Most schools and universities do not consider Grammarly cheating, as it functions similarly to spell-check and grammar-check features built into word processors. Grammarly's AI writing suggestions are widely accepted for editing and improving student-authored work. Submitting Grammarly-generated content as original writing, however, crosses into academic dishonesty territory.

Free AI writing tools for students include Grammarly free (basic grammar and spelling), ChatGPT free tier (brainstorming and feedback), Quillbot free (limited paraphrasing), Hemingway Editor free (readability in browser), and Google Docs smart compose (basic AI writing suggestions built in). These tools collectively cover the most common student writing needs at no cost.