diff --git a/apps/registration/forms.py b/apps/registration/forms.py
index 80531d7..5f2ae99 100644
--- a/apps/registration/forms.py
+++ b/apps/registration/forms.py
@@ -8,7 +8,7 @@ from django.core.exceptions import ValidationError
 from django.forms import FileInput
 from django.utils.translation import gettext_lazy as _
 
-from .models import AdminRegistration, CoachRegistration, StudentRegistration
+from .models import AdminRegistration, CoachRegistration, StudentRegistration, VolunteerRegistration
 
 
 class SignupForm(UserCreationForm):
@@ -101,6 +101,15 @@ class CoachRegistrationForm(forms.ModelForm):
         fields = ('team', 'professional_activity', 'give_contact_to_animath', 'email_confirmed',)
 
 
+class VolunteerRegistrationForm(forms.ModelForm):
+    """
+    A volunteer can also tell its professional activity.
+    """
+    class Meta:
+        model = VolunteerRegistration
+        fields = ('professional_activity', 'give_contact_to_animath', 'email_confirmed',)
+
+
 class AdminRegistrationForm(forms.ModelForm):
     """
     Admins can tell everything they want.
diff --git a/apps/registration/models.py b/apps/registration/models.py
index e7e0b12..536befc 100644
--- a/apps/registration/models.py
+++ b/apps/registration/models.py
@@ -91,24 +91,57 @@ class Registration(PolymorphicModel):
         verbose_name_plural = _("registrations")
 
 
-def get_random_filename(instance, filename):
+def get_random_photo_filename(instance, filename):
     return "authorization/photo/" + get_random_string(64)
 
 
-class StudentRegistration(Registration):
-    """
-    Specific registration for students.
-    They have a team, a student class and a school.
-    """
+def get_random_health_filename(instance, filename):
+    return "authorization/health/" + get_random_string(64)
+
+
+def get_random_parental_filename(instance, filename):
+    return "authorization/parental/" + get_random_string(64)
+
+
+class ParticipantRegistration(Registration):
     team = models.ForeignKey(
         "participation.Team",
-        related_name="students",
+        related_name="participants",
         on_delete=models.PROTECT,
+        blank=True,
         null=True,
         default=None,
         verbose_name=_("team"),
     )
 
+    photo_authorization = models.FileField(
+        verbose_name=_("photo authorization"),
+        upload_to=get_random_photo_filename,
+        blank=True,
+        default="",
+    )
+
+    health_sheet = models.FileField(
+        verbose_name=_("health sheet"),
+        upload_to=get_random_health_filename,
+        blank=True,
+        default="",
+    )
+
+    @property
+    def type(self):
+        raise NotImplementedError
+
+    @property
+    def form_class(self):
+        raise NotImplementedError
+
+
+class StudentRegistration(ParticipantRegistration):
+    """
+    Specific registration for students.
+    They have a team, a student class and a school.
+    """
     student_class = models.IntegerField(
         choices=[
             (12, _("12th grade")),
@@ -123,9 +156,9 @@ class StudentRegistration(Registration):
         verbose_name=_("school"),
     )
 
-    photo_authorization = models.FileField(
-        verbose_name=_("photo authorization"),
-        upload_to=get_random_filename,
+    parental_authorization = models.FileField(
+        verbose_name=_("parental authorization"),
+        upload_to=get_random_parental_filename,
         blank=True,
         default="",
     )
@@ -144,20 +177,11 @@ class StudentRegistration(Registration):
         verbose_name_plural = _("student registrations")
 
 
-class CoachRegistration(Registration):
+class CoachRegistration(ParticipantRegistration):
     """
     Specific registration for coaches.
     They have a team and a professional activity.
     """
-    team = models.ForeignKey(
-        "participation.Team",
-        related_name="coachs",
-        on_delete=models.PROTECT,
-        null=True,
-        default=None,
-        verbose_name=_("team"),
-    )
-
     professional_activity = models.TextField(
         verbose_name=_("professional activity"),
     )
@@ -176,6 +200,24 @@ class CoachRegistration(Registration):
         verbose_name_plural = _("coach registrations")
 
 
+class VolunteerRegistration(Registration):
+    """
+    Specific registration for organizers and juries.
+    """
+    professional_activity = models.TextField(
+        verbose_name=_("professional activity"),
+    )
+
+    @property
+    def type(self):
+        return _('volunteer')
+
+    @property
+    def form_class(self):
+        from registration.forms import VolunteerRegistrationForm
+        return VolunteerRegistrationForm
+
+
 class AdminRegistration(Registration):
     """
     Specific registration for admins.