Hearts and Hands Preschool, a 24-year-old Calistoga institution and a rare nonprofit day care, informed parents in January that it does not have the funds to stay open. “The school was established to support working families in Calistoga,” board President MaryAnn Salinger said. About 80% of the students receive scholarships, according to the school, including through Community Resources for Children and the St. Helena-based nonprofit Preschool for All. CRC is a Napa-based organization that supports child care providers and families across the county. “It would push Calistoga even deeper into a child care desert, leaving families asking impossible questions.