Padlet is compatible with screen reader software but is working on becoming more accessible as they improve the content to screen readers. As such, some students may find it difficult to read on Padlet so be aware that you may need to create post-hoc information in a different format.
Add a note in the Padlet description that informs students they can request the information in a different format and who to contact. For example put in the description ‘To request the information in a different format to support accessibility please email - put in here the Padlet owners' email or a generic Module email if appropriate)
You can export the content of Padlet to various formats, PDF, CSV etc. For more on this please view How to export a Padlet (video 1min 36 secs).