Given the importance of professional development in the form of training and accompanying trainer qualifications and competencies, PEACH Paper 6, Checking for Flow: The Current Status of ECE Training and ECE Trainer Competencies has multiple purposes which include: (a) to describe the status of ECE professional development initiatives in California related to training, as well as the factors that affect such opportunities and areas for future growth, strengthening and integration; (b) to provide definitions of ECE training, education and technical assistance and perspectives of how these relate to ECE trainer qualifications; (c) to offer a sample of ECE training programs and trends in California and in Los Angeles County; (d) to explain the Los Angeles County ECE Workforce Consortium/PEACH ECE Trainer Competencies Working Group's research (including elements of quality ECE training and considerations of the unique characteristics of the ECE workforce, for example) that was utilized in building recommendations related to ECE trainer competencies, certification, and inclusion in a state ECE Workforce Registry; (e) to describe the ECE Trainer Competencies Working Group's Recommended ECE Trainer Qualification Matrix, and accompanying input from the ECE Workforce Consortium. (author abstract)