Because teachers' goals for their students as well as students' situations vary greatly from school to school, I've provided numerous ways to sort through a wide variety of resources and tools inside the membership.
One way is to use the Kid-Inspired ESL Assessment which you can download for free here: https://kid-inspired.com/english-language-assessment/
You may also find the Foundations for Fantastic Classes course inside the membership helpful as well for deciding which materials to use with your students.
There is also a quick Level Chooser Assistant where you can answer a few questions and get an idea of leveling (You can find this on the homepage).
Finally, since you know (or will know) your students best, you can dig into the different levels yourself and test things out by starting a little low and working your way up to where students are productively challenged.
You can sign up for the Kid-Inspired ESL Curriculum Membership here.