Shortcode for post relationship

Hi.
I have a custom post type named “school”.
Each school has a relationship with wpdm .
(Relationship created with Toolset plugin]
I’d like to show files that related to school with shortcode.
Is it possbile? how?
Is there any way to show the files that assigned to school?

For example:
I have files in WPDM like this:

• file1.pdf
• file2.pdf
• file3.pdf
• file4.pdf

and I have schools like this:

• School 1
• School 2
• School 3

file4.pdf and file3.pdf assigned to school 2
how can I show file4 and file3 in school 2?
with shortcode or any other way that is possible!