I think the responsibilities include:
Alexander Graham Bell graduated high school at 13 years of age. At 16 he secured a teacher-student position to learn elocation and music.
He graduated but he had a 4.0 when he did so he was.
Well depends on teacher age . his, her liking of the student . if worse he will be rusticated from the school.
If someone bullies you the head teacher knows and if the student applies for the school, he/she will not get accepted.
a petition
This is against the law for most student and teacher couples. When it is not against the law it is against school policy and will get teacher fired and student expelled.
Currently part time student
no, she never graduated high school, she got her GED
A student teacher is someone who is in the process of completing a Bachelor of Teaching and is currently in a school placement.
she had a bright student.
Student/teacher ratio: 7:1 says http://college.sparknotes.com/school/academics.epl?inun_id=6573
This would be a conflict of interest for the teacher. A techer who has a personal realtionship with a student would lose their neutral objectivity toward the student. In most school districts the teacher could be fired for having a relationship with a student.