Emotions Trump Learning

I understand and believe this to be completely true. For example if something bad happens at home over the weekend and it is like a pet, family member, or the child getting hurt or every passing away that is going to affect anyone paying attention in school. For a classroom context you have if a teacher verbally embarasses a student in front of the whole class their embarassment and anger at the teacher are going to cause them to not want to listen to the teacher or to not participate in class anymore for the fear of being scolded again. This can go the other way too if the student has something so exciting going on in their life they might be too giddy or figety with excitement to focus on much else. I know that I am driven by emotions if I am having a bad/sad/ or real exciting day that is what I am focusing on not learning. Why should students be any different?