A friend of mine pointed me to this thread, knowing how obsessive I am about punctuality.
It's so good to see other people admitting to what I thought were strange habits of mine-- keeping a book in the car for when I am too early (again!) was just one.
Re: the OP, I think that she made a judgement about the trend in parenting to not teach children responsibility and came here to vent. Whether it was fair to the specific people signing in late is not really an issue. The issue that seems to bother the OP, IMO, is the issue of parents just not caring enough to teach their children responsibility and courtesy to others.
For the person that was allowed to be late everyday because they wanted to watch TV, I'm glad that you turned out ok. But I find your parents' decision to allow this to be reprehensible. By allowing you to watch TV and be continually late to class, they were teaching you that your personal enjoyment of TV was more important than the needs of the other children and the teacher in your class. As you point out, mathematics are not what's being taught in kindergarten-- learning to work with others is the main point and I think you missed the mark that year.
Re: occasional tardiness. It happens sometimes. As long as it's not a habit and it's not because you just didn't care, I don't see a problem.
Re: habitual tardiness. Although a habitually tardy person may not think that they are showing disregard to the others impacted; to the person that is waiting on a regular basis, it sure feels like the tardy person has no regard for you or your schedule.
Re: whether it's possible for a child to never be late to school. My daughter is in 8th grade and has never been tardy unless there was a doctor's appointment scheduled early in the day. However, I am not willing to promise she won't be late to school tomorrow. Sometimes, things happen. We'll see. Even if she is never late once in her school life, no one in our household is perfect.
Re: making children be ready to leave at 5:50am. I had to be at work very early every morning and my daughter had to be out of the house at 6:45am everyday for 5 years. She learned to do it and it wasn't a big deal. But, I took a lot of grief from well-meaning relatives that told me I was cruel to make her get up and out so early. Yes, they actually used the word cruel. Not a single one of them ever asked if she was always awake at 5am without the aid of an alarm clock. My point is that we had to be up and out because of my job and we learned to deal with it. To judge someone for their lifestyle when you know nothing about it is unfair.
My opinion regarding punctuality in general is that, if a person is repeatedly tardy and it negatively impacts anyone else-- and it probably does or else there wouldn't be a scheduled time of arrival-- that person is acting in a self-centered way. However, I also believe that every single person in the world has a few self-centered habits that impact those around them. Tardiness is just the habit under scrutiny at this moment.