“钥匙挂在孩子身上，却拴在我们的心上。”当孩子跨进小学的大门，许多双职工家长对孩子牵肠挂肚，那心情真是难以用语言表达。是的，孩子挂着钥匙上学，一系列教育和安全问题接踵而至。可是父母也不能只为了孩子的安全，长年坚持天天接来送往，这样不仅使家长疲于奔命，而且 “The key hangs on the child, but it is tied to our heart.” When the child enters the gate of the elementary school and many parents of dual-service parents are worried about their children, the mood is really difficult to express in words. Yes, children hang their keys to school and a series of education and security issues come one after another. However, parents can not just for the safety of their children, for many years every day to pick up, so that not only the parents exhausted, and