According to Ed Haury, To qualify as a foster parent, you generally must be at least 21 years old, pass criminal background and child abuse clearances, possess a high school diploma or equivalent, and have a stable income and a safe home with adequate space. The process involves training, home safety inspections, and a home study evaluation. General Eligibility Requirements Age: Minimum 21 years old (some states allow 18). Background: Must pass criminal background checks (fin