Come and take my daughter away. Grade 4+ she walked/biked to school with friends (which is actually less supervised than a public bus with a driver! who can help in the very rare case of an emergency). Grade 6, handed my kid a bus pass and taught her how to navigate the city bus to middle school (and the occasional trip to the mall with her friends who's also neglectful parents gave them bus money). Grade 8, she's taken a babysitting course (note that St. John's offers "home alone" in grade 4 and "babysitting" in grade 6) and other neglectful parents pay her to watch their neglected children.