diff --git a/app/api/assiduites.py b/app/api/assiduites.py
index d3f216c04..1ffaeb415 100644
--- a/app/api/assiduites.py
+++ b/app/api/assiduites.py
@@ -946,8 +946,8 @@ def _count_manager(requested) -> tuple[str, dict]:
 
     est_just: str = requested.args.get("est_just")
     if est_just is not None:
-        trues: tuple[str] = ("v", "t", "vrai", "true")
-        falses: tuple[str] = ("f", "faux", "false")
+        trues: tuple[str] = ("v", "t", "vrai", "true", "1")
+        falses: tuple[str] = ("f", "faux", "false", "0")
 
         if est_just.lower() in trues:
             filtered["est_just"] = True
@@ -960,6 +960,12 @@ def _count_manager(requested) -> tuple[str, dict]:
     if user_id is not False:
         filtered["user_id"] = user_id
 
+    # cas 9 : split
+
+    split = requested.args.get("split", False)
+    if split is not False:
+        filtered["split"] = True
+
     return (metric, filtered)
 
 
@@ -1015,8 +1021,8 @@ def _filter_manager(requested, assiduites_query: Query) -> Query:
 
     est_just: str = requested.args.get("est_just")
     if est_just is not None:
-        trues: tuple[str] = ("v", "t", "vrai", "true")
-        falses: tuple[str] = ("f", "faux", "false")
+        trues: tuple[str] = ("v", "t", "vrai", "true", "1")
+        falses: tuple[str] = ("f", "faux", "false", "0")
 
         if est_just.lower() in trues:
             assiduites_query: Query = scass.filter_assiduites_by_est_just(
diff --git a/app/scodoc/sco_assiduites.py b/app/scodoc/sco_assiduites.py
index bd683033f..2a478843b 100644
--- a/app/scodoc/sco_assiduites.py
+++ b/app/scodoc/sco_assiduites.py
@@ -152,7 +152,6 @@ class CountCalculator:
             delta: timedelta = assi.date_fin - assi.date_debut
 
             if delta.days > 0:
-                # raise Exception(self.hours)
                 self.compute_long_assiduite(assi)
 
                 continue
@@ -186,37 +185,78 @@ def get_assiduites_stats(
     if filtered is not None:
         deb, fin = None, None
         for key in filtered:
-            if key == "etat":
-                assiduites = filter_assiduites_by_etat(assiduites, filtered[key])
-            elif key == "date_fin":
-                fin = filtered[key]
-            elif key == "date_debut":
-                deb = filtered[key]
-            elif key == "moduleimpl_id":
-                assiduites = filter_by_module_impl(assiduites, filtered[key])
-            elif key == "formsemestre":
-                assiduites = filter_by_formsemestre(
-                    assiduites, Assiduite, filtered[key]
-                )
-            elif key == "est_just":
-                assiduites = filter_assiduites_by_est_just(assiduites, filtered[key])
-            elif key == "user_id":
-                assiduites = filter_by_user_id(assiduites, filtered[key])
+            match key:
+                case "etat":
+                    assiduites = filter_assiduites_by_etat(assiduites, filtered[key])
+                case "date_fin":
+                    fin = filtered[key]
+                case "date_debut":
+                    deb = filtered[key]
+                case "moduleimpl_id":
+                    assiduites = filter_by_module_impl(assiduites, filtered[key])
+                case "formsemestre":
+                    assiduites = filter_by_formsemestre(
+                        assiduites, Assiduite, filtered[key]
+                    )
+                case "est_just":
+                    assiduites = filter_assiduites_by_est_just(
+                        assiduites, filtered[key]
+                    )
+                case "user_id":
+                    assiduites = filter_by_user_id(assiduites, filtered[key])
+
         if (deb, fin) != (None, None):
             assiduites = filter_by_date(assiduites, Assiduite, deb, fin)
 
-    calculator: CountCalculator = CountCalculator()
-    calculator.compute_assiduites(assiduites)
-    count: dict = calculator.to_dict()
-
     metrics: list[str] = metric.split(",")
-
     output: dict = {}
+    calculator: CountCalculator = CountCalculator()
 
-    for key, val in count.items():
+    if "split" not in filtered:
+        calculator.compute_assiduites(assiduites)
+        count: dict = calculator.to_dict()
+
+        for key, val in count.items():
+            if key in metrics:
+                output[key] = val
+        return output if output else count
+
+    etats: list[str] = (
+        filtered["etat"].split(",")
+        if "etat" in filtered
+        else ["absent", "present", "retard"]
+    )
+
+    for etat in etats:
+        output[etat] = _count_assiduites_etat(etat, assiduites, calculator, metrics)
+        if "est_just" not in filtered:
+            output[etat]["justifie"] = _count_assiduites_etat(
+                etat, assiduites, calculator, metrics, justifie=True
+            )
+
+    return output
+
+
+def _count_assiduites_etat(
+    etat: str,
+    assiduites: Query,
+    calculator: CountCalculator,
+    metrics: list[str],
+    justifie: bool = False,
+):
+    calculator.reset()
+    etat_num: int = scu.EtatAssiduite.get(etat, -1)
+    assiduites_etat: Query = assiduites.filter(Assiduite.etat == etat_num)
+    if justifie:
+        assiduites_etat = assiduites_etat.filter(Assiduite.est_just == True)
+
+    calculator.compute_assiduites(assiduites_etat)
+    count_etat: dict = calculator.to_dict()
+    output_etat: dict = {}
+    for key, val in count_etat.items():
         if key in metrics:
-            output[key] = val
-    return output if output else count
+            output_etat[key] = val
+    return output_etat if output_etat else count_etat
 
 
 def filter_assiduites_by_etat(assiduites: Assiduite, etat: str) -> Query:
@@ -232,7 +272,7 @@ def filter_assiduites_by_est_just(assiduites: Assiduite, est_just: bool) -> Quer
     """
     Filtrage d'une collection d'assiduites en fonction de s'ils sont justifiés
     """
-    return assiduites.filter_by(est_just=est_just)
+    return assiduites.filter(Assiduite.est_just == est_just)
 
 
 def filter_by_user_id(