The CelestHealth System (CHS-MH) is a brief, session-by-session progress monitoring tool for psychotherapy. It evolved from longer outcome measures used in research over 30 years ago. The CHS-MH aims to provide clinically useful information to help therapists adjust treatment through 2-3 question forms completed by patients at each session. Research has found the CHS-MH helps identify patients not improving, improves adherence to treatment, and leads to better outcomes compared to treatment as usual. It is available in several languages and used in both public and private clinical settings.