To determine if *a specific* Centennial Online High School is accredited, you must provide more information, such as:
* The full and exact name of the school: A slight difference in name can indicate a completely different institution.
* The state or country where the school is located: Accreditation is granted at the state or national level.
Once you provide this information, I can help you research its accreditation status using reputable sources like the school's website and relevant state or regional accrediting agencies.