2nd Day Confusion...

I admit that it has been hard for me to let Allan go. I keep thinking that I know I cannot just walk him to class every day, but at the same time; how do I just drop him off at the door and let him walk into the school all alone and take himself to class? I realize this makes me sound like a crazy person, but it has been on my mind. Rich walked him to class yesterday for his 2nd day of school because he wanted to meet his teacher and see his classroom. Allan showed him that he knew exactly where to go and that we would not have to worry anymore. It made me feel better about it all.
The day dragged on forever, even though we had a lot of things to do to get our bills paid. We went to pick up Rich's check, went to the bank, paid our van payment, took Aaron out for lunch and then did our shopping. I still had almost two hours before it was time to go pick him up. Aaron took his nap and I ended up leaving ten minutes before I had to for us to walk and get Allan lol. We had to wait 15 minutes outside the school. Then it was 3:20 before Allan's class ever came out! I saw his teacher finally and like 7 or so kids in the line, but no Allan.
She asked who I was there to pick up and I told her. She looked and realized he was not in the line. She said "Oh no! I bet he went in the bus riders line!" She turned to go in the school to find him. Just as she did this, he came out the door. She asked him what happened and he told her he did not know where she was. She told him how important it was for him to pay attention and to be in the right line and always watch to see where she is and know where to go. Then she told him he gave her and his mommy a heart attack! The whole incident was maybe like two or three minutes. I was relieved that he came right out and everything was fine.
I have had a talk with him again about how important it is to pay attention to his teacher and to do what she tells him to. He said he was just in the classroom I guess and did not realize everyone left. I just think it is crazy how worried I was about him finding his classroom that I never thought there would be a possibility that he did not come out when he was supposed to! I realize it was just a mix up and that it was only the 2nd day. It will be better once he gets into the routine and knows what to expect while at school. I am just glad I did not overreact at all or get upset. I did get worried for that split second before he walked out the door but I really did not think he would have gotten on a bus.