diff --git a/project_rates/serializers.py b/project_rates/serializers.py
index d07f20c1..6ad4376b 100644
--- a/project_rates/serializers.py
+++ b/project_rates/serializers.py
@@ -7,9 +7,29 @@
 
 
 class ProjectScoreCreateSerializer(serializers.ModelSerializer):
+    def __init__(self, *args, **kwargs):
+        self.criteria_to_get = kwargs.pop("criteria_to_get", None)
+        super(ProjectScoreCreateSerializer, self).__init__(*args, **kwargs)
+
     class Meta:
         model = ProjectScore
-        fields = ["criteria", "user", "project", "value"]
+        fields = ("criteria", "user", "project", "value")
+        validators = []
+
+    def get_queryset(self):
+        return self.Meta.model.objects.filter(
+            criteria__id__in=self.criteria_to_get
+        ).select_related("criteria", "project", "user")
+
+    def validate(self, data):
+        criteria = data["criteria"]
+        ProjectScoreValidate(
+            criteria_type=criteria.type,
+            value=data.get("value"),
+            criteria_min_value=criteria.min_value,
+            criteria_max_value=criteria.max_value,
+        )
+        return data
 
 
 class CriteriaSerializer(serializers.ModelSerializer):
diff --git a/project_rates/views.py b/project_rates/views.py
index 41fe5b69..78046842 100644
--- a/project_rates/views.py
+++ b/project_rates/views.py
@@ -13,7 +13,6 @@
     CriteriaSerializer,
     ProjectScoreSerializer,
     ProjectScoreGetSerializer,
-    serialize_data_func,
 )
 from users.permissions import IsExpert, IsExpertPost
 
@@ -24,28 +23,40 @@ class RateProject(generics.CreateAPIView):
     serializer_class = ProjectScoreCreateSerializer
     permission_classes = [IsExpertPost]
 
-    def create(self, request, *args, **kwargs):
-        # try:
+    def get_needed_data(self) -> tuple[dict, list[int]]:
         data = self.request.data
-
-        user = self.request.user.id
+        user_id = self.request.user.id
         project_id = self.kwargs.get("project_id")
 
-        criteria_to_get = []
+        criteria_to_get = [
+            criterion["criterion_id"] for criterion in data
+        ]  # needed for validation later
         for criterion in data:
-            criterion["user_id"] = user
-            criterion["project_id"] = project_id
-            criteria_to_get.append(criterion["criterion_id"])
-
-        serialize_data_func(criteria_to_get, data)
-        ProjectScore.objects.bulk_create(
-            [ProjectScore(**score) for score in data],
-            update_conflicts=True,
-            update_fields=["value"],
-            unique_fields=["criteria", "user", "project"],
-        )
+            criterion["user"] = user_id
+            criterion["project"] = project_id
+            criterion["criteria"] = criterion.pop("criterion_id")
+
+        return data, criteria_to_get
+
+    def create(self, request, *args, **kwargs) -> Response:
+        try:
+            data, criteria_to_get = self.get_needed_data()
+
+            serializer = ProjectScoreCreateSerializer(
+                data=data, criteria_to_get=criteria_to_get, many=True
+            )
+            serializer.is_valid(raise_exception=True)
+
+            ProjectScore.objects.bulk_create(
+                [ProjectScore(**item) for item in serializer.validated_data],
+                update_conflicts=True,
+                update_fields=["value"],
+                unique_fields=["criteria", "user", "project"],
+            )
 
-        return Response({"success": True}, status=status.HTTP_201_CREATED)
+            return Response({"success": True}, status=status.HTTP_201_CREATED)
+        except Exception as e:
+            return Response({"error": str(e)}, status=status.HTTP_400_BAD_REQUEST)
 
 
 class RateProjects(generics.ListAPIView):