The phrase "to support all learners" means to help and encourage every person who is trying to learn or acquire new knowledge or skills. Full definition
We are looking for people who are passionate about supporting learners through their development. (cv-library.co.uk)
Having a deep understanding of who you are as a teacher and a person will influence greatly your ability to support learners of all kinds. (educationworld.com)
It also supports learners as they review and study. (blog.edmentum.com)