They’re back. After a summer of dormancy, the parents’ WhatsApp group chats are waking up like sleepy teenagers, the buzzes and dings gradually increasing as we run out the clock on August. At first, it was just a few — someone chiming in to remind everyone about after-school registration. A couple of replies, saying thanks for the info, hope everyone is having a great end of summer, a few hearts and thumbs-up. Then more started to appear, with links to baseball programs, travel soccer questions and someone asking: “When is the first day of school? I should know this.”