Six free AI-powered tools, all built on the NGSL Project word lists — for measuring text difficulty, generating and simplifying texts, and helping learners build vocabulary they can actually use.

THE NGSL PROFILER

Created by Dr. Charles Browne | Released Sept 2, 2024

Understand text difficulty. Align vocabulary. Make informed decisions.

The NGSL Profiler is a free online text analysis tool that lets teachers, publishers and researchers analyse text difficulty against any of the NGSL word lists and make principled decisions about lexical control.

Paste in a text, choose your word list and level, and run the analysis. It calculates lexical coverage, identifies out-of-level vocabulary, accounts automatically for more than 100,000 proper nouns, and allows manual adjustment based on what your learners already know. If coverage falls below roughly 90%, the text likely needs adjustment — revise and re-profile until it matches your instructional goals. That's a research-based benchmark rather than guesswork.

Launch the Profiler →

Text Generator and Text Rewriter

Two early era AI-supported tools built into the Profiler. The Text Generator creates short original non-fiction texts in accessible English. The Text Rewriter shortens longer texts, reducing overall text length and sentence length while preserving core meaning. Both of these tools are directly connected to the NGSL Profiler so results can always be checked against student’s exact level.

Together with the NGSL Profiler they support a practical workflow: analyse → adjust → shorten → re-check.

THREE AI TOOLS FOR TEACHERS AND LEARNERS

I've built these to apply the word lists to everyday classroom problems. They're early tools, built on established pedagogical principles, and they'll keep evolving.

NGSL Vocabulary Pushed Output Coach

Created by Dr. Charles Browne | Released June 15, 2026

The NGSL Vocabulary Pushed Output Coach helps learners move beyond simply recognizing vocabulary to actively using it in meaningful communication. Inspired by Merrill Swain’s work on pushed output, the tool provides practice with all 2,800 NGSL words in five-word frequency blocks through simulated social-media-style written chat and spoken interaction. Learners repeatedly retrieve and use target words rather than simply studying definitions or answering receptive vocabulary questions.

Learners can begin at any point in the NGSL by entering a word rank such as NGSL 1100 or NGSL 1850, and the Coach automatically selects the next five target words and guides them through practice. The NGSL Placement Test can help identify an appropriate starting point, and learners can then work progressively through the list as their productive vocabulary develops.

A note about AI-generated materials: These tools are designed to provide much tighter lexical control than general-purpose AI systems, but all AI-generated materials should still be reviewed before classroom or instructional use.

These free tools are also the public-facing side of a larger body of work. Through CBC Consulting, Dr. Browne builds custom AI content pipelines for publishers and educational organizations — including large-scale graded reader series with validated vocabulary control. For publisher partnerships, institutional implementation, curriculum design support, professional development, or workshops using the NGSL framework and these AI tools, please contact Dr. Charles Browne at CBC Consulting via email or the link below.