diff --git a/serializer.py b/serializer.py
new file mode 100644
index 0000000..b0b496b
--- /dev/null
+++ b/serializer.py
@@ -0,0 +1,6 @@
+def serialize(subject):
+    string = subject.__dict__
+    for category in string["grades"]:
+        for counter, grade in enumerate(string["grades"][category][0]):
+            string["grades"][category][0][counter] = grade.__dict__
+    return str(string)