If you're just trying to get the children you can do:
Student.find(1).teachers
If your teachers model has a summary field, you could do something like this:
Student.find(1).teachers.first.summary
I guess if you have a summary field in the join table and you know the student id you could so this:
Together.find_by_student_id(1).summary
There's other ways to do this. A few ways to skin a Rails cat.