Parent engagement in early behavioral intervention is essential to achieving meaningful intervention outcomes. However, parents may experience multiple barriers to engagement. The Parent-coaching Assessment, Individualization, and Response to Stressors (PAIRS) was developed to help practitioners assess families’ barriers and facilitators, individualize their intervention, and respond to stressors using a contextual, functional approach. An expert panel of Board Certified Behavior Analysts ® (BCBAs) evaluated the content validity of the PAIRS. Average scale values (S-CVI/Ave) were 0.92 for relevance, 0.85 for effectiveness, and 0.91 for appropriateness. The PAIRS was revised, and a follow-up evaluation was conducted to rate the tool’s utility. This led to the final version of the PAIRS. Clinical implications and future directions are discussed.