> For the complete documentation index, see [llms.txt](https://api-docs.speechace.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api-docs.speechace.com/guides-on-common-topics/interpreting-overall-scores/grammar-bands.md). # Grammar Bands **9** Uses a full range of structures naturally and appropriately. Produces consistently accurate structures apart from ‘slips’ characteristic of native speaker speech. *** **8** Uses a wide range of structures flexibly. Produces a majority of error-free sentences with only very occasional inappropriacies or basic/non-systematic errors. *** **7** Uses a range of complex structures with some flexibility. Frequently produces error-free sentences, though some grammatical mistakes persist. *** **6** Uses a mix of simple and complex structures, but with limited flexibility. May make frequent mistakes with complex structures though these rarely cause comprehension problems. *** **5** Produces basic sentence forms with reasonable accuracy. Uses a limited range of more complex structures, but these usually contain errors and may cause some comprehension problems. *** **4** Produces basic sentence forms and some correct simple sentences but subordinate structures are rare. Errors are frequent and may lead to misunderstanding. *** **3** Attempts basic sentence forms but with limited success, or relies on apparently memorised utterances. Makes numerous errors except in memorised expressions. *** **2** Cannot produce basic sentence forms. *** **1** Cannot produce basic sentence forms. *** **0** User did not attempt any questions. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://api-docs.speechace.com/guides-on-common-topics/interpreting-overall-scores/grammar-bands.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.