diff --git a/apps/family/migrations/0003_achievement_valid_alter_familymembership_family.py b/apps/family/migrations/0003_achievement_valid_alter_familymembership_family.py
new file mode 100644
index 00000000..9121a1ff
--- /dev/null
+++ b/apps/family/migrations/0003_achievement_valid_alter_familymembership_family.py
@@ -0,0 +1,24 @@
+# Generated by Django 5.2.4 on 2025-07-21 21:02
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('family', '0002_family_display_image'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='achievement',
+            name='valid',
+            field=models.BooleanField(default=False, verbose_name='valid'),
+        ),
+        migrations.AlterField(
+            model_name='familymembership',
+            name='family',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='memberships', to='family.family', verbose_name='family'),
+        ),
+    ]
diff --git a/apps/family/models.py b/apps/family/models.py
index 1acc9ba8..708c3929 100644
--- a/apps/family/models.py
+++ b/apps/family/models.py
@@ -45,9 +45,9 @@ class Family(models.Model):
         return self.name
 
     def update_score(self, *args, **kwargs):
-        challenge_set = Challenge.objects.select_for_update().filter(achievement__family=self)
+        challenge_set = Challenge.objects.select_for_update().filter(achievement__family=self, achievement__valid=True)
         points_sum = challenge_set.aggregate(models.Sum("points"))
-        self.score = points_sum["points__sum"]
+        self.score = points_sum["points__sum"] if points_sum["points__sum"] else 0
         self.save()
         self.update_ranking()
 
@@ -86,7 +86,7 @@ class FamilyMembership(models.Model):
     family = models.ForeignKey(
         Family,
         on_delete=models.PROTECT,
-        related_name=_('members'),
+        related_name=_('memberships'),
         verbose_name=_('family'),
     )
 
@@ -157,6 +157,11 @@ class Achievement(models.Model):
         default=timezone.now,
     )
 
+    valid = models.BooleanField(
+        verbose_name=_('valid'),
+        default=False,
+    )
+
     class Meta:
         verbose_name = _('achievement')
         verbose_name_plural = _('achievements')
diff --git a/apps/family/tables.py b/apps/family/tables.py
index 759de96d..0a0b773a 100644
--- a/apps/family/tables.py
+++ b/apps/family/tables.py
@@ -65,6 +65,23 @@ class AchievementTable(tables.Table):
     """
     List recent achievements.
     """
+    validate = tables.LinkColumn(
+        'family:achievement_validate',
+        args=[A('id')],
+        verbose_name=_("Validate"),
+        text=_("Validate"),
+        orderable=False,
+        attrs={
+            'th': {
+                'id': 'validate-achievement-header'
+            },
+            'a': {
+                'class': 'btn btn-success',
+                'data-type': 'validate-achievement'
+            }
+        },
+    )
+
     delete = tables.LinkColumn(
         'family:achievement_delete',
         args=[A('id')],
@@ -73,11 +90,11 @@ class AchievementTable(tables.Table):
         orderable=False,
         attrs={
             'th': {
-                'id': 'delete-membership-header'
+                'id': 'delete-achievement-header'
             },
             'a': {
                 'class': 'btn btn-danger',
-                'data-type': 'delete-membership'
+                'data-type': 'delete-achievement'
             }
         },
     )
@@ -87,10 +104,11 @@ class AchievementTable(tables.Table):
             'class': 'table table-condensed table-striped table-hover'
         }
         model = Achievement
-        fields = ('family', 'challenge', 'challenge__points', 'obtained_at', )
+        fields = ('family', 'challenge', 'challenge__points', 'obtained_at', 'valid')
         template_name = 'django_tables2/bootstrap4.html'
         order_by = ('-obtained_at',)
 
+
 class FamilyAchievementTable(tables.Table):
     """
     Table des défis réalisés par une famille spécifique.
@@ -102,4 +120,4 @@ class FamilyAchievementTable(tables.Table):
         attrs = {
             'class': 'table table-condensed table-striped table-hover'
         }
-        order_by = ('-obtained_at',)
\ No newline at end of file
+        order_by = ('-obtained_at',)
diff --git a/apps/family/templates/family/achievement_confirm_delete.html b/apps/family/templates/family/achievement_confirm_delete.html
index 893e0afb..3b378fa5 100644
--- a/apps/family/templates/family/achievement_confirm_delete.html
+++ b/apps/family/templates/family/achievement_confirm_delete.html
@@ -18,9 +18,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
             <form method="post">
                 {% csrf_token %}
                 <a class="btn btn-primary" href="{% url 'family:achievement_list' %}">{% trans "Return to achievements list" %}</a>
-                {% if not object.locked %}
-                    <button class="btn btn-danger" type="submit">{% trans "Delete" %}</button>
-                {% endif %}
+                <button class="btn btn-danger" type="submit">{% trans "Delete" %}</button>
             </form>
         </div>
     </div>
diff --git a/apps/family/templates/family/achievement_confirm_validate.html b/apps/family/templates/family/achievement_confirm_validate.html
new file mode 100644
index 00000000..e417480a
--- /dev/null
+++ b/apps/family/templates/family/achievement_confirm_validate.html
@@ -0,0 +1,28 @@
+{% extends "base.html" %}
+{% comment %}
+SPDX-License-Identifier: GPL-3.0-or-later
+{% endcomment %}
+{% load i18n crispy_forms_tags %}
+
+{% block content %}
+    <div class="card bg-light">
+        <div class="card-header text-center">
+            <h4>{% trans "Validate achievement" %}</h4>
+        </div>
+            <div class="card-body">
+                <div class="alert alert-warning">
+                    {% blocktrans %}Are you sure you want to validate this achievement? This action can't be undone.{% endblocktrans %}
+                </div>
+            </div>
+        <div class="card-footer text-center">
+            <form method="post">
+                {% csrf_token %}
+                <a class="btn btn-primary" href="{% url 'family:achievement_list' %}">{% trans "Return to achievements list" %}</a>
+                <form method="post" action="{% url 'family:achievement_validate' pk %}">
+                    {% csrf_token %}
+                    <button type="submit" class="btn btn-success">{% trans "Validate" %}</button>
+                </form>
+            </form>
+        </div>
+    </div>
+{% endblock %}
diff --git a/apps/family/templates/family/achievement_list.html b/apps/family/templates/family/achievement_list.html
index fe1fd62f..63cd6255 100644
--- a/apps/family/templates/family/achievement_list.html
+++ b/apps/family/templates/family/achievement_list.html
@@ -10,13 +10,24 @@ SPDX-License-Identifier: GPL-3.0-or-later
 <div class="card mb-4" id="history">
     <div class="card-header">
         <p class="card-text font-weight-bold">
-            {% trans "Recent achievements history" %}
+            {% trans "Invalid achievements history" %}
         </p>
         <a class="btn btn-sm btn-primary mx-2" href="{% url "family:manage" %}">
             {% trans "Return to management page" %}
         </a>
     </div>
-    {% render_table table %}
+    {% render_table invalid %}
 </div>
 
+<div class="card mb-4" id="history">
+    <div class="card-header">
+        <p class="card-text font-weight-bold">
+            {% trans "Valid achievements history" %}
+        </p>
+        <a class="btn btn-sm btn-primary mx-2" href="{% url "family:manage" %}">
+            {% trans "Return to management page" %}
+        </a>
+    </div>
+    {% render_table valid %}
+</div>
 {% endblock %}
\ No newline at end of file
diff --git a/apps/family/urls.py b/apps/family/urls.py
index 072cbada..7d9e9c5b 100644
--- a/apps/family/urls.py
+++ b/apps/family/urls.py
@@ -9,16 +9,17 @@ app_name = 'family'
 urlpatterns = [
     path('list/', views.FamilyListView.as_view(), name="family_list"),
     path('add-family/', views.FamilyCreateView.as_view(), name="add_family"),
-    path('detail/<int:pk>/', views.FamilyDetailView.as_view(), name="family_detail"),
-    path('update/<int:pk>/', views.FamilyUpdateView.as_view(), name="family_update"),
-    path('update_pic/<int:pk>/', views.FamilyPictureUpdateView.as_view(), name="update_pic"),
-    path('add_member/<int:family_pk>/', views.FamilyAddMemberView.as_view(), name="family_add_member"),
+    path('<int:pk>/detail/', views.FamilyDetailView.as_view(), name="family_detail"),
+    path('<int:pk>/update/', views.FamilyUpdateView.as_view(), name="family_update"),
+    path('<int:pk>/update_pic/', views.FamilyPictureUpdateView.as_view(), name="update_pic"),
+    path('<int:family_pk>/add_member/', views.FamilyAddMemberView.as_view(), name="family_add_member"),
     path('challenge/list/', views.ChallengeListView.as_view(), name="challenge_list"),
     path('add-challenge/', views.ChallengeCreateView.as_view(), name="add_challenge"),
-    path('challenge/detail/<int:pk>/', views.ChallengeDetailView.as_view(), name="challenge_detail"),
-    path('challenge/update/<int:pk>/', views.ChallengeUpdateView.as_view(), name="challenge_update"),
+    path('challenge/<int:pk>/detail/', views.ChallengeDetailView.as_view(), name="challenge_detail"),
+    path('challenge/<int:pk>/update/', views.ChallengeUpdateView.as_view(), name="challenge_update"),
     path('manage/', views.FamilyManageView.as_view(), name="manage"),
-    path('achievements/', views.AchievementsView.as_view(), name="achievement_list"),
-    path('achievement/delete/<int:pk>/', views.AchievementDeleteView.as_view(), name="achievement_delete"),
+    path('achievement/list/', views.AchievementsView.as_view(), name="achievement_list"),
+    path('achievement/<int:pk>/validate/', views.AchievementValidateView.as_view(), name="achievement_validate"),
+    path('achievement/<int:pk>/delete/', views.AchievementDeleteView.as_view(), name="achievement_delete"),
     path('api/family/', include('family.api.urls')),
 ]
diff --git a/apps/family/views.py b/apps/family/views.py
index 33108f32..a6e886a8 100644
--- a/apps/family/views.py
+++ b/apps/family/views.py
@@ -4,12 +4,14 @@
 from datetime import date
 
 from django.conf import settings
+from django.shortcuts import redirect
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.db import transaction
-from django.views.generic import DetailView, UpdateView
+from django.views.generic import DetailView, UpdateView, ListView
 from django.views.generic.edit import DeleteView
+from django.views.generic.base import TemplateView
 from django.utils.translation import gettext_lazy as _
-from django_tables2 import SingleTableView
+from django_tables2 import SingleTableView, MultiTableMixin
 from permission.backends import PermissionBackend
 from permission.views import ProtectQuerysetMixin, ProtectedCreateView
 from django.urls import reverse_lazy
@@ -287,23 +289,57 @@ class FamilyManageView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableView
 
     def get_table(self, **kwargs):
         table = super().get_table(**kwargs)
-        table.exclude = ('delete',)
+        table.exclude = ('delete', 'validate',)
         table.orderable = False
         return table
 
 
-class AchievementsView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableView):
+class AchievementsView(ProtectQuerysetMixin, LoginRequiredMixin, MultiTableMixin, ListView):
     """
     List all achievements
     """
     model = Achievement
-    table_class = AchievementTable
+    tables = [AchievementTable, AchievementTable, ]
     extra_context = {'title': _('Achievement list')}
 
-    def get_table(self, **kwargs):
-        table = super().get_table(**kwargs)
-        table.orderable = True
-        return table
+    def get_tables(self, **kwargs):
+        tables = super().get_tables(**kwargs)
+
+        tables[0].prefix = 'invalid-'
+        tables[1].prefix = 'valid-'
+        tables[1].exclude = ('validate', 'delete',)
+
+        return tables
+
+    def get_tables_data(self):
+        table_valid = self.get_queryset().filter(valid=True)
+        table_invalid = self.get_queryset().filter(valid=False)
+        return [table_invalid, table_valid, ]
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+
+        tables = context['tables']
+
+        context['invalid'] = tables[0]
+        context['valid'] = tables[1]
+        return context
+
+
+class AchievementValidateView(ProtectQuerysetMixin, LoginRequiredMixin, TemplateView):
+    """
+    Validate an achievement obtained by a family
+    """
+    template_name = 'family/achievement_confirm_validate.html'
+
+    def post(self, request, pk):
+        # On récupère l'objet à valider
+        achievement = Achievement.objects.get(pk=pk)
+        # On modifie le champ valid
+        achievement.valid = True
+        achievement.save()
+        # On redirige vers la page de détail ou la liste
+        return redirect(reverse_lazy('family:achievement_list'))
 
 
 class AchievementDeleteView(ProtectQuerysetMixin, LoginRequiredMixin, DeleteView):
diff --git a/apps/member/views.py b/apps/member/views.py
index 3c1ebef7..3cf3cd32 100644
--- a/apps/member/views.py
+++ b/apps/member/views.py
@@ -207,8 +207,8 @@ class UserDetailView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView):
             modified_note.is_active = True
             context["can_unlock_note"] = not user.note.is_active and PermissionBackend\
                 .check_perm(self.request, "note.change_noteuser_is_active", modified_note)
-            
-        families = Family.objects.filter(members__user=user).distinct()
+
+        families = Family.objects.filter(memberships__user=user).distinct()
         context["families"] = families
 
         return context