There's no publicly available, comprehensive list of schools in the Shreveport-Bossier area that specifically accept Cornerstone Correspondence diplomas. Acceptance of alternative credentials like Cornerstone diplomas varies widely from school to school, and even within schools depending on the program and level (e.g., high school vs. college).
To find out if a specific school accepts a Cornerstone diploma, you must contact the admissions office of each individual school directly. Explain that you have a Cornerstone Correspondence diploma and ask if they will accept it for admission to their program. Be prepared to provide details about your coursework and grades.