How do I extend  a model and add some fields and social networking:
For example, I have a class called student:

class Student(models.Model):
     _name = 'student'

     name = fields.Char(string='name')

How do I extend this model to add new fields and social network feature?
My first try is something like this:

class StudentExtension(models.Model):
    _name = 'student'
    _inherit = ['student','mail.thread']

   form = fields.Char(string='Form')
   age = fields.Integer(string='Age')

My question is: Is this the right way to extend the student class? What effect does making the '_name' same as super class have? I tried to extend the Student class without including a _name and I keep getting an error. any help will be appreciated