Django formset set current user

Related to this question, but expanding on it - How would I use this technique in a formset?

I'd like to use the current logged in user in a form, but I'm using the form in a formset. The referenced solution for a single form is to pass request.user to the form and process in init. How do I add to the kwargs for each form in the formset?

Example in my code:

in forms.py

class NewStudentForm (forms.Form):
    username = forms.RegexField(label=_("Username"), max_length=30, regex=r'^\w+$',
        help_text = _("Required. 30 characters or fewer. Alphanumeric characters only (letters, digits and underscores)."),
        error_message = _("This value must contain only letters, numbers and underscores."))
    first_name = forms.CharField(label=_('first name'), max_length=30 )
    last_name = forms.CharField(label=_('last name'), max_length=30, )
    email = forms.EmailField(label=_('e-mail address') )
    password = forms.CharField(label=_('password'), max_length=64, )

    class Meta:
        model = User
        fields = ("username","first_name", "last_name", "email", "password")

    def __init__(self, *args, **kwargs):
        self._user = kwargs.pop('user')
        super(NewStudentForm, self).__init__(*args, **kwargs)


    def save(self, commit=True):
        user = super(NewStudentForm, self).save(commit=False)
        user.set_password(self.cleaned_data["password"])
        if commit:
            user.save()
            profile = Profile.objects.create_profile(user)
            profile.activiation_key = profile.ACTIVATED_KEY
            profile.authorized = True
            profile.save()
            user.is_active=True
            user.save()
            student = models.Student()
            student.user = user
            student.teacher = self._user
            student.plaintext_pwd = self.cleaned_data["password"]
            s