Retrieve repeater sub field (image) from an Options Page – ACF

I have a similar issue —
I made an ACF called Icon (post id is 348) and linked it to my Options Page called School Settings
Inside of Icon, I have a field called School with a name (school_header) that is a repeater field
I am trying to loop through this repeater and school icons
These images will display in our custom header .php template as a list

Attempts:
We have tried to use the word ‘option’, ‘options’, and ‘icon’ instead of 348

Here is my code: