diff --git a/extra/prompt_tuning/config/program/aggregation-assessor-baseline.yaml b/extra/prompt_tuning/config/program/aggregation-assessor-baseline.yaml
new file mode 100644
index 00000000..98d1d68b
--- /dev/null
+++ b/extra/prompt_tuning/config/program/aggregation-assessor-baseline.yaml
@@ -0,0 +1,2 @@
+type: AGGREGATION_ASSESSOR
+name: AggregationAssessorBaseline
diff --git a/extra/prompt_tuning/config/program/aggregation-assessor-cot.yaml b/extra/prompt_tuning/config/program/aggregation-assessor-cot.yaml
new file mode 100644
index 00000000..f6a7be97
--- /dev/null
+++ b/extra/prompt_tuning/config/program/aggregation-assessor-cot.yaml
@@ -0,0 +1,2 @@
+type: AGGREGATION_ASSESSOR
+name: AggregationAssessorCoT
diff --git a/extra/prompt_tuning/evaluate.py b/extra/prompt_tuning/evaluate.py
index 35bcf2e8..0ae140e4 100644
--- a/extra/prompt_tuning/evaluate.py
+++ b/extra/prompt_tuning/evaluate.py
@@ -10,7 +10,7 @@
 from neptune.utils import stringify_unsupported
 from omegaconf import DictConfig
 from tuning.loaders import IQLGenerationDataLoader
-from tuning.metrics import filtering_assess_acc
+from tuning.metrics import aggregation_assess_acc, filtering_assess_acc
 from tuning.programs import PROGRAMS
 from tuning.utils import save, serialize_results
 
@@ -25,14 +25,17 @@ class EvaluationType(Enum):
     """
 
     FILTERING_ASSESSOR = "FILTERING_ASSESSOR"
+    AGGREGATION_ASSESSOR = "AGGREGATION_ASSESSOR"
 
 
 EVALUATION_DATALOADERS = {
     EvaluationType.FILTERING_ASSESSOR.value: IQLGenerationDataLoader,
+    EvaluationType.AGGREGATION_ASSESSOR.value: IQLGenerationDataLoader,
 }
 
 EVALUATION_METRICS = {
     EvaluationType.FILTERING_ASSESSOR.value: filtering_assess_acc,
+    EvaluationType.AGGREGATION_ASSESSOR.value: aggregation_assess_acc,
 }
 
 
diff --git a/extra/prompt_tuning/tuning/metrics/__init__.py b/extra/prompt_tuning/tuning/metrics/__init__.py
index 56615738..60597b40 100644
--- a/extra/prompt_tuning/tuning/metrics/__init__.py
+++ b/extra/prompt_tuning/tuning/metrics/__init__.py
@@ -1,3 +1,3 @@
-from .iql import filtering_assess_acc
+from .iql import aggregation_assess_acc, filtering_assess_acc
 
-__all__ = ["filtering_assess_acc"]
+__all__ = ["aggregation_assess_acc", "filtering_assess_acc"]
diff --git a/extra/prompt_tuning/tuning/metrics/iql.py b/extra/prompt_tuning/tuning/metrics/iql.py
index d47b0689..3340f929 100644
--- a/extra/prompt_tuning/tuning/metrics/iql.py
+++ b/extra/prompt_tuning/tuning/metrics/iql.py
@@ -5,15 +5,31 @@
 
 def filtering_assess_acc(gold: Dict, pred: Prediction) -> bool:
     """
-    IQL decision metric.
+    IQL filtering decision metric.
 
     Args:
         gold: The ground truth data point.
         pred: The prediction.
 
     Returns:
-        The decision metric.
+        The filtering decision accuracy.
     """
     return ((gold["iql_filters"] is None and not gold["iql_filters_unsupported"]) and not pred.decision) or (
         (gold["iql_filters"] is not None or gold["iql_filters_unsupported"]) and pred.decision
     )
+
+
+def aggregation_assess_acc(gold: Dict, pred: Prediction) -> bool:
+    """
+    IQL aggregation decision metric.
+
+    Args:
+        gold: The ground truth data point.
+        pred: The prediction.
+
+    Returns:
+        The aggregation decision accuracy.
+    """
+    return ((gold["iql_aggregation"] is None and not gold["iql_aggregation_unsupported"]) and not pred.decision) or (
+        (gold["iql_aggregation"] is not None or gold["iql_aggregation_unsupported"]) and pred.decision
+    )
diff --git a/extra/prompt_tuning/tuning/programs/iql.py b/extra/prompt_tuning/tuning/programs/iql.py
index 2a20da47..a7209672 100644
--- a/extra/prompt_tuning/tuning/programs/iql.py
+++ b/extra/prompt_tuning/tuning/programs/iql.py
@@ -1,6 +1,6 @@
 from dspy import ChainOfThought, Module, Predict, Prediction
 
-from ..signatures.iql import CheckQuestionFiltering
+from ..signatures.iql import CheckQuestionAggregation, CheckQuestionFiltering
 
 
 class FilteringAssessorBaseline(Module):
@@ -47,3 +47,49 @@ def forward(self, question: str) -> Prediction:
         """
         decision = self.decide(question=question).decision
         return Prediction(decision=decision.lower() == "true")
+
+
+class AggregationAssessorBaseline(Module):
+    """
+    Program that assesses whether a question requires aggregation.
+    """
+
+    def __init__(self) -> None:
+        super().__init__()
+        self.decide = Predict(CheckQuestionAggregation)
+
+    def forward(self, question: str) -> Prediction:
+        """
+        Assess whether a question requires aggregation.
+
+        Args:
+            question: The question to assess.
+
+        Returns:
+            The prediction.
+        """
+        decision = self.decide(question=question).decision
+        return Prediction(decision=decision.lower() == "true")
+
+
+class AggregationAssessorCoT(Module):
+    """
+    Program that assesses whether a question requires aggregation.
+    """
+
+    def __init__(self) -> None:
+        super().__init__()
+        self.decide = ChainOfThought(CheckQuestionAggregation)
+
+    def forward(self, question: str) -> Prediction:
+        """
+        Assess whether a question requires aggregation.
+
+        Args:
+            question: The question to assess.
+
+        Returns:
+            The prediction.
+        """
+        decision = self.decide(question=question).decision
+        return Prediction(decision=decision.lower() == "true")
diff --git a/extra/prompt_tuning/tuning/signatures/iql.py b/extra/prompt_tuning/tuning/signatures/iql.py
index 273edf60..d3a6c531 100644
--- a/extra/prompt_tuning/tuning/signatures/iql.py
+++ b/extra/prompt_tuning/tuning/signatures/iql.py
@@ -18,3 +18,22 @@ class CheckQuestionFiltering(Signature):
             "(Respond with True or False)"
         ),
     )
+
+
+class CheckQuestionAggregation(Signature):
+    """
+    Given a question, determine whether the answer requires initial data filtering in order to compute it.
+    Initial data filtering is a process in which the result set is reduced to only include the rows that
+    meet certain criteria specified in the question.
+    """
+
+    question = InputField(
+        prefix="Question: ",
+    )
+    decision = OutputField(
+        prefix="Decision: ",
+        desc=(
+            "indicates whether the answer to the question requires initial data filtering. "
+            "(Respond with True or False)"
+        ),
+    )