Dorothy Said:

why do students drop out of high school or college?

We Answered:

because they:
-have reached a frustration factor with their level of achievement
-because the school no longer serves their personal goals or needs
-because they found an opportunity for employment

Theresa Said:

Why do you teachers tend to act very sad when you see students drop out of high school?

We Answered:

I'm not a teacher, but I think I can answer this in part.
Those who do NOT graduate from High School tend to earn much less money over the course of their lives. There are rare exceptions to this. While earning money isn't the only important thing in life, it can help you do those things that you want to do.
Furthermore, as a drop out, you may not realize your full potential for your life, since so many employers or associations will not give you a chance without that diploma.
Finally, the teachers spend a lot of time, mental sweat and emotion on their students. They know the things I mentioned above, and they've also see other people with potential throw it away by not finishing school. It's a personal loss for them.
High school may seem difficult and/or time consuming now, but it will seem like a missed chance when you look back on it in a few years.

Shannon Said:

why do students drop out of high school because of too much stress?

We Answered:

Because there are meds out there now that tell them stress is severe and over-dramatic. Doctors sympathize with them to sell more drugs and really, they use their "conditions" to excuse a lot of what they do/don't do.