Yes it should some people need it for a project so it should be OK for it to be at school,but if no reason then I would say no.
There is no reason that science should not be compulsory for school. If you are scientifically illiterate you are illiterate.
The biggest reason is that it is illegal (in most of the U.S. anyway)
Most of the time you will know the reason school is closed, but if you don't know the reason you should ask your teacher of school administrators.
There is no reason.
There is no reason why they should not (unless there is a specific medical reason) though it is not compulsory.
Yes unless you have a good reason not to.
To contact their parents to pick them up from school.
Complain and get back in school! All successful people are educated. I know you may hate it but you won't regret learning!!
Yes, people should most definitely wear clothes to school every day.
it should be it will keep people in school
Depends on the reason. If a student is homeschooled the teacher is required by the school district to go to the child's home, but if the reason is a social reason a teacher should not visit the child. Some school districts also require teachers to pay home visit at the start of the school year, but this is school business. Anything beyond school business is not proper unless the teacher is friends with the parents.