diff --git a/app/api/partitions.py b/app/api/partitions.py
index 785701997..bc534cf70 100644
--- a/app/api/partitions.py
+++ b/app/api/partitions.py
@@ -7,7 +7,7 @@
 """
   ScoDoc 9 API : partitions
 """
-from flask import jsonify
+from flask import abort, jsonify, request
 
 from app.api import bp
 
@@ -17,53 +17,59 @@ from app.models import FormSemestre, FormSemestreInscription, Identite
 from app.models import GroupDescr, Partition
 from app.models.groups import group_membership
 from app.scodoc.sco_permissions import Permission
+from app.scodoc import sco_utils as scu
 
 
-@bp.route("/partitions/<int:formsemestre_id>", methods=["GET"])
+@bp.route("/partition/<int:partition_id>", methods=["GET"])
 @token_auth.login_required
 @token_permission_required(Permission.APIView)
-def partition(formsemestre_id: int):
+def partition_info(partition_id: int):
+    """
+    Exemple de résultat :
+    ```
+    {
+        'bul_show_rank': False,
+        'formsemestre_id': 39,
+        'groups': [
+            {'id': 268, 'name': 'A', 'partition_id': 100},
+            {'id': 269, 'name': 'B', 'partition_id': 100}
+        ],
+        'groups_editable': True,
+        'id': 100,
+        'numero': 100,
+        'partition_name': 'TD',
+        'show_in_lists': True
+    }
+    ```
+    """
+    partition = Partition.query.get_or_404(partition_id)
+    return jsonify(partition.to_dict(with_groups=True))
+
+
+@bp.route("/formsemestre/<int:formsemestre_id>/partitions", methods=["GET"])
+@token_auth.login_required
+@token_permission_required(Permission.APIView)
+def formsemestre_partitions(formsemestre_id: int):
     """
     Retourne la liste de toutes les partitions d'un formsemestre
 
     formsemestre_id : l'id d'un formsemestre
 
-    Exemple de résultat :
-        [
-          {
-            "partition_id": 2,
-            "id": 2,
-            "formsemestre_id": 1,
-            "partition_name": "TD",
-            "numero": 1,
-            "bul_show_rank": false,
-            "show_in_lists": true
-          },
-          {
-            "partition_id": 1,
-            "id": 1,
-            "formsemestre_id": 1,
-            "partition_name": null,
-            "numero": 0,
-            "bul_show_rank": false,
-            "show_in_lists": true
-          }
-        ]
     """
     formsemestre: FormSemestre = FormSemestre.query.get_or_404(formsemestre_id)
-    return jsonify([partition.to_dict() for partition in formsemestre.partitions])
+    return jsonify(
+        [partition.to_dict(with_groups=True) for partition in formsemestre.partitions]
+    )
 
 
-@bp.route("/partition/group/<int:group_id>", methods=["GET"])
-@bp.route("/partition/group/<int:group_id>/etat/<string:etat>", methods=["GET"])
+@bp.route("/group/<int:group_id>/etudiants", methods=["GET"])
 @token_auth.login_required
 @token_permission_required(Permission.APIView)
-def etud_in_group(group_id: int, etat=None):
+def etud_in_group(group_id: int):
     """
     Retourne la liste des étudiants dans un groupe
 
     group_id : l'id d'un groupe
-    etat : état de l'inscription
 
     Exemple de résultat :
     [
@@ -79,16 +85,22 @@ def etud_in_group(group_id: int, etat=None):
         ...
     ]
     """
-    # Fonction utilisée : app.scodoc.sco_groups.get_group_members()
     group = GroupDescr.query.get_or_404(group_id)
-    if etat is None:
-        query = group.etuds
-    else:
-        query = (
-            Identite.query.join(FormSemestreInscription)
-            .filter_by(formsemestre_id=group.partition.formsemestre_id, etat=etat)
-            .join(group_membership)
-            .filter_by(group_id=group_id)
-        )
+    return jsonify([etud.to_dict_short() for etud in group.etuds])
+
+
+@bp.route("/group/<int:group_id>/etudiants/query", methods=["GET"])
+def etud_in_group_query(group_id: int):
+    """Etudiants du groupe, filtrés par état"""
+    etat = request.get("etat", "")
+    if etat not in {scu.INSCRIT, scu.DEMISSION, scu.DEF}:
+        abort(404, "etat invalid")
+    group = GroupDescr.query.get_or_404(group_id)
+    query = (
+        Identite.query.join(FormSemestreInscription)
+        .filter_by(formsemestre_id=group.partition.formsemestre_id, etat=etat)
+        .join(group_membership)
+        .filter_by(group_id=group_id)
+    )
 
     return jsonify([etud.to_dict_short() for etud in query])
diff --git a/app/models/formsemestre.py b/app/models/formsemestre.py
index 4887c7b14..b3ad6672a 100644
--- a/app/models/formsemestre.py
+++ b/app/models/formsemestre.py
@@ -170,6 +170,7 @@ class FormSemestre(db.Model):
         """
         d = dict(self.__dict__)
         d.pop("_sa_instance_state", None)
+        d["annee_scolaire"] = self.annee_scolaire_str()
         d["formsemestre_id"] = self.id
         d["titre_num"] = self.titre_num()
         if self.date_debut:
@@ -184,6 +185,8 @@ class FormSemestre(db.Model):
             d["date_fin"] = d["date_fin_iso"] = ""
         d["responsables"] = [u.id for u in self.responsables]
         d["titre_court"] = self.formation.acronyme
+        d["parcours"] = [p.to_dict() for p in self.parcours]
+        d["session_id"] = self.session_id()
         return d
 
     def get_infos_dict(self) -> dict: