Create an intricate and detailed line art of a middle school scene where two children are outside near the entrance. One child should be depicted picking up objects from the ground while another child is on their hands and knees also engaging with items on the ground. Include details such as trees flanking the school building, multiple windows and an entry path leading to double doors under an arched doorway. Add elements that suggest this is an educational environment but leave spaces uncolored for potential coloring activity.