diff --git a/Changelog.md b/Changelog.md
index fe1119ba..15d26abc 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -12,6 +12,7 @@ All notable changes to this project will be documented here.
 - Add remote URL whitelist for AI tester to restrict allowed endpoints (#693)
 - Increased default settings job timeout from 600s to 1200s (#707)
 - Disable pytest cacheprovider to avoid creating .pytest_cache in isolated runs (#709)
+- Fixed Python tester to correctly report marks when `markus_marks_earned` equals total or zero (#716)
 
 ## [v2.9.0]
 - Install stack with GHCup (#626)
diff --git a/server/autotest_server/testers/py/py_tester.py b/server/autotest_server/testers/py/py_tester.py
index 9ffb7520..5f0e468b 100644
--- a/server/autotest_server/testers/py/py_tester.py
+++ b/server/autotest_server/testers/py/py_tester.py
@@ -251,11 +251,8 @@ def run(self) -> str:
         """
         Return a json string containing all test result information.
         """
-        if self.points_earned is not None and 0 < self.points_earned < self.points_total:
-            return self.partially_passed(points_earned=self.points_earned, message=self.message)
-        elif self.points_earned is not None and self.points_earned > self.points_total:
-            bonus = self.points_earned - self.points_total
-            return self.passed_with_bonus(points_bonus=bonus, message=self.message)
+        if self.points_earned is not None:
+            return self.done(points_earned=self.points_earned, message=self.message)
         elif self.status == "success":
             return self.passed(message=self.message)
         elif self.status == "failure":
diff --git a/server/autotest_server/tests/testers/py/fixtures/sample_tests_marks_earned.py b/server/autotest_server/tests/testers/py/fixtures/sample_tests_marks_earned.py
new file mode 100644
index 00000000..1d25e812
--- /dev/null
+++ b/server/autotest_server/tests/testers/py/fixtures/sample_tests_marks_earned.py
@@ -0,0 +1,8 @@
+import pytest
+
+
+@pytest.mark.parametrize("marks_earned", [0, 1, 2])
+def test_partial_marks(request, marks_earned: int) -> None:
+    request.node.add_marker(pytest.mark.markus_marks_total(2))
+    request.node.add_marker(pytest.mark.markus_marks_earned(marks_earned))
+    assert False, f"Should be {marks_earned}/2"
diff --git a/server/autotest_server/tests/testers/py/test_py_tester.py b/server/autotest_server/tests/testers/py/test_py_tester.py
index 1dee43e9..73deab71 100644
--- a/server/autotest_server/tests/testers/py/test_py_tester.py
+++ b/server/autotest_server/tests/testers/py/test_py_tester.py
@@ -1,5 +1,6 @@
 from ....testers.specs import TestSpecs
-from ....testers.py.py_tester import PyTester
+from ....testers.py.py_tester import PyTester, PyTest
+import json
 import re
 
 
@@ -54,3 +55,49 @@ def test_skip(request, monkeypatch) -> None:
     """))
     results = tester.run_python_tests()
     assert results == {"fixtures/sample_tests_skip.py": []}
+
+
+def test_marks_earned_respected_when_equal_to_total(request, monkeypatch) -> None:
+    """Test that markus_marks_earned is respected even when earned == total and test fails (TICKET-602)."""
+    monkeypatch.chdir(request.fspath.dirname)
+    tester = PyTester(specs=TestSpecs.from_json("""
+        {
+          "test_data": {
+            "script_files": ["fixtures/sample_tests_marks_earned.py"],
+            "category": ["instructor"],
+            "timeout": 30,
+            "tester": "pytest",
+            "output_verbosity": "short",
+            "extra_info": {
+              "criterion": "",
+              "name": "Python Test Group 1"
+            }
+          }
+        }
+    """))
+    results = tester.run_python_tests()
+    test_results = results["fixtures/sample_tests_marks_earned.py"]
+    assert len(test_results) == 3
+
+    # Build PyTest instances and run them to get final marks
+    outputs = []
+    for res in test_results:
+        test = PyTest(tester, "fixtures/sample_tests_marks_earned.py", res)
+        outputs.append(json.loads(test.run()))
+
+    assert len(outputs) == 3
+
+    # Sort by marks_earned so assertions are deterministic
+    outputs.sort(key=lambda o: o["marks_earned"])
+
+    # marks_earned=0: should get 0 marks (TICKET-603)
+    assert outputs[0]["marks_earned"] == 0
+    assert outputs[0]["marks_total"] == 2
+
+    # marks_earned=1: should get 1 mark (partial)
+    assert outputs[1]["marks_earned"] == 1
+    assert outputs[1]["marks_total"] == 2
+
+    # marks_earned=2: should get 2 marks, not 0 (TICKET-602)
+    assert outputs[2]["marks_earned"] == 2
+    assert outputs[2]["marks_total"] == 2