A Student Success Plan [SSP] is the term we use at CSIS to refer to a 504 plan. This is a document that outlines the accommodations, services or modifications that a student with an identified disability requires.
To read more about a 504 plan (or an SSP) read this article from understood.org
To find out more about the procedure for an SSP please refer to this document.
Key points of the procedure:
Read the SSP thoroughly
Implement the Accommodations or Modifications
Use the Slack channel for communication
Monitor student progress using IXL and Thinkwave
Be prepared to share information for the purpose of the SSP review