My 8 yr old has had anxiety issues her whole life, but they became much easier to identify once she was in school. My husband does, too, and I was concerned for her. We leave extra time in the mornings because she will freak out about missing the bus, too. She will wait at the door fully ready for over 10 minutes still worrying she could miss the bus if she looked away for a second. We started an anxiety journal. We write notes back and forth basically. She's afraid to actually say aloud what's on her mind, but she might write something like, "I'm worried about school ending because I don't know who my teacher will be." For anything on her mind, I think the anxiety stems from fear of the unknown. She is MUCH better about the bus thing now - which peaked last year. I asked her what she thought would happen if she did miss the bus. At first she didn't know. So my follow-up statement was something like, "Well, that's something to worry about then...the not knowing part." So we talked it out. What could happen? Would she miss school if she missed the bus? No, I would take her. (If you aren't home, arrange a backup plan so she knows what really WOULD happen if she missed it.) We get silly about it sometimes to lighten the mood. Like I'll say, "Ok, you miss the bus and A) you're never allowed to go to school ever again and I get you a job at Starbucks, B) a talking dog walks by and asks if you'd like to ride on his back to school, or C) mom says oh well, get in the car, I'll take you today!" She likes doing that. For the bathroom thing, she probably is nervous and has to go. A lot of people are like that. Or maybe she's afraid that she'll have to go on the bus (is it a longer ride like my daughter's is?) Or maybe it's become part of her anxiety ritual. I think the most important thing is to talk to her and to accept her without getting anxious yourself over her anxiety. Otherwise, you'll both feed off of each other's anxiety and it will be hard to take a breath & relax.