At 63 and 71, our friends are becoming grandparents. We're raising a kindergartener.

Barb Higgins with her 5-year-old son, Jack. Tony Luong for BI Barb Higgins underwent IVF and gave birth to her son, Jack, at the age of 57 in March 2021. He recently started kindergarten, and she is sometimes mistaken for his grandmother. The older mom brushes it off, saying people in her…