diff --git a/models/scop_instance.py b/models/scop_instance.py
index f414e0d7a282b43d71325818634e44917cf7043b..bbf3f5fd14995c7f010585fa23dcd6fecc8d3345 100644
--- a/models/scop_instance.py
+++ b/models/scop_instance.py
@@ -17,6 +17,10 @@ class ScopInstance(models.Model):
     all_exo_validated = fields.Boolean(
         compute="_compute_all_exo_validated", default=False
     )
+    number_exo = fields.Integer(
+        string="Nombre d'exo",
+        compute="_compute_number_exo"
+    )
 
     # ------------------------------------------------------
     # Computed fields / Search Fields
@@ -29,6 +33,10 @@ class ScopInstance(models.Model):
             else:
                 instance.all_exo_validated = False
 
+    def _compute_number_exo(self):
+        for instance in self:
+            instance.number_exo = len(instance.exo_ids)
+
     # ------------------------------------------------------
     # Button
     # ------------------------------------------------------
diff --git a/views/scop_instance.xml b/views/scop_instance.xml
index 16df386e57a97cd3ff8b7366b2b9d28f85666cd8..ebf58c0168f0c749b37d42be4fa179826e649d26 100644
--- a/views/scop_instance.xml
+++ b/views/scop_instance.xml
@@ -3,7 +3,7 @@
      License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
 <odoo>
     <data>
-
+        <!-- FORM VIEW -->
         <record id="scop_instance_exo_form_view" model="ir.ui.view">
             <field name="name">scop.instance.exo.form</field>
             <field name="model">scop.instance</field>
@@ -68,5 +68,18 @@
             </field>
         </record>
 
+        <!-- TREE VIEW -->
+        <record id="scop_instance_exo_tree_view" model="ir.ui.view">
+            <field name="name">scop.instance.exo.tree.inherit</field>
+            <field name="model">scop.instance</field>
+            <field name="priority" eval="60" />
+            <field name="inherit_id" ref="cgscop_instance.scop_instance_tree_view" />
+            <field name="arch" type="xml">
+                <xpath expr="//field[@name='date']" position="after">
+                    <field name="number_exo" />
+                </xpath>
+            </field>
+        </record>
+
     </data>
 </odoo>