diff --git a/api_main.py b/api_main.py
index bd9dada..f664856 100644
--- a/api_main.py
+++ b/api_main.py
@@ -185,7 +185,7 @@ async def health_check():
     raise HTTPException(status_code=500, detail="Service unhealthy")  
 
 
-@app.get("/api/v1/predict")                                            
+@app.post("/api/v1/predict")                                            
 async def predict_exam_score(data: StudentProfile):
     """Predict a student's exam score from their profile."""
     if not MODEL_READY:
@@ -221,8 +221,8 @@ async def predict_exam_score(data: StudentProfile):
             "INSERT INTO students (name, age, study_hours_per_day, predicted_score) VALUES (?,?,?,?)",
             (data.name, data.age, data.studyHours, score),
         )
-        conn.close()                                                   
-        conn.commit()
+        conn.commit()                                                   
+        conn.close()
     except Exception as e:
         raise HTTPException(status_code=500, detail=f"DB write failed: {e}")
 
@@ -268,8 +268,10 @@ async def get_analytics():
     scores       = [r["predicted_score"] for r in rows if r["predicted_score"] is not None]
     num_students = len(scores)
     total_score  = sum(scores)
-
-    avg_score = total_score / num_students                             
+if num_students>0 :
+    avg_score = total_score / num_students   
+else :
+    avg_score = 0                 
 
     distribution = {
         "A (90-100)" : sum(1 for s in scores if s >= 90),