diff --git a/canvasapi/course.py b/canvasapi/course.py
index 8cd5329..7b87e2d 100644
--- a/canvasapi/course.py
+++ b/canvasapi/course.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
+from warnings import warn
 
 from six import python_2_unicode_compatible
 
@@ -1134,12 +1135,15 @@ class Course(CanvasObject):
         :rtype: :class:`canvasapi.paginated_list.PaginatedList` of
             :class:`canvasapi.submission.Submission`
         """
+        if 'grouped' in kwargs:
+            warn('The `grouped` parameter must be empty. Removing kwarg `grouped`.')
+            del kwargs['grouped']
+
         return PaginatedList(
             Submission,
             self._requester,
             'GET',
             'courses/%s/students/submissions' % (self.id),
-            grouped=False,
             _kwargs=combine_kwargs(**kwargs)
         )
 
diff --git a/canvasapi/section.py b/canvasapi/section.py
index 5d74533..f9f86ca 100644
--- a/canvasapi/section.py
+++ b/canvasapi/section.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
+from warnings import warn
 
 from six import python_2_unicode_compatible
 
@@ -157,12 +158,15 @@ class Section(CanvasObject):
         :rtype: :class:`canvasapi.paginated_list.PaginatedList` of
             :class:`canvasapi.submission.Submission`
         """
+        if 'grouped' in kwargs:
+            warn('The `grouped` parameter must be empty. Removing kwarg `grouped`.')
+            del kwargs['grouped']
+
         return PaginatedList(
             Submission,
             self._requester,
             'GET',
             'sections/%s/students/submissions' % (self.id),
-            grouped=False,
             _kwargs=combine_kwargs(**kwargs)
         )
 

Course.list_multiple_submissions mismanages grouped response
The `Course.list_multiple_submissions` method returns a paginated list of `Submission` instances.  However, printing any of these instances using its default string conversion fails:

```python
submissions = course.list_multiple_submissions(student_ids='all', assignment_ids=(123, 456))
for submission in submissions:
    print(submission)
```

> `AttributeError: 'Submission' object has no attribute 'id'`

If instead I print each submission’s `__class__` and attribute dictionary, I see something rather strange.  The class is indeed `canvasapi.submission.Submission`.  However, the attributes are not those that a `Submission` should have.  Ignoring the double-underscore internal attributes, each `submission` instance has:

- `_requester`
- `attributes`
- `integration_id`
- `section_id`
- `set_attributes`
- `sis_user_id`
- `submissions`
- `to_json`
- `user_id`

The `sis_user_id` and `user_id` attributes tell me that this is some sort of person-identifying structure along the lines of a `User` or `Enrollment` object.  But it does not have the complete set of attributes for either of those.  The value of the `submissions` attribute is a list of dicts; I believe that each of these dicts corresponds to one `Submission` object.

The `Course.list_multiple_submissions` method produces a `GET /api/v1/courses/:course_id/students/submissions` request, and [the documentation for that request](https://canvas.instructure.com/doc/api/submissions.html#method.submissions_api.for_students) shows that its response can take one of two forms depending on the `grouped` parameter.  I can see that the `Course.list_multiple_submissions` implementation always hard-codes `grouped=False`, but the response coming back looks exactly like the Canvas API documentation example of a *grouped* response, complete with those `submissions` attributes giving lists of `Submission` objects.

So it seems that the `grouped=False` aspect of the request is not working as intended.  I don’t know why; is this a Canvas bug or a `canvasapi` bug?  Either way, the current behavior certainly is not working as intended.  `canvasapi` should either request a non-grouped response in a way that works, or else it should process the grouped response in a way that respects the actual structure and meaning of the returned data.

For now I am working around this myself by building new `Submission` instances out of the dicts in each of the `submissions` attributes, like this:

```python
groups = course.list_multiple_submissions(student_ids='all', assignment_ids=assignmentIds)
submissions = [Submission(course._requester, raw) for raw in chain.from_iterable(group.submissions for group in groups)]
```

But clearly that is not how the API is intended to be used.
diff --git a/tests/test_course.py b/tests/test_course.py
index 09b5e4c..b2bc030 100644
--- a/tests/test_course.py
+++ b/tests/test_course.py
@@ -1,7 +1,8 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
+import os
 import unittest
 import uuid
-import os
+import warnings
 
 import requests_mock
 from six import text_type
@@ -647,6 +648,25 @@ class TestCourse(unittest.TestCase):
         self.assertEqual(len(submission_list), 2)
         self.assertIsInstance(submission_list[0], Submission)
 
+    def test_list_multiple_submissions_grouped_param(self, m):
+        register_uris({'course': ['list_multiple_submissions']}, m)
+
+        with warnings.catch_warnings(record=True) as warning_list:
+            warnings.simplefilter('always')
+            submissions = self.course.list_multiple_submissions(grouped=True)
+            submission_list = [submission for submission in submissions]
+
+            # Ensure using the `grouped` param raises a warning
+            self.assertEqual(len(warning_list), 1)
+            self.assertEqual(warning_list[-1].category, UserWarning)
+            self.assertEqual(
+                text_type(warning_list[-1].message),
+                'The `grouped` parameter must be empty. Removing kwarg `grouped`.'
+            )
+
+            self.assertEqual(len(submission_list), 2)
+            self.assertIsInstance(submission_list[0], Submission)
+
     # get_submission()
     def test_get_submission(self, m):
         register_uris({'course': ['get_submission']}, m)
diff --git a/tests/test_section.py b/tests/test_section.py
index c26ba21..b3313fa 100644
--- a/tests/test_section.py
+++ b/tests/test_section.py
@@ -1,7 +1,9 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 import unittest
+import warnings
 
 import requests_mock
+from six import text_type
 
 from canvasapi import Canvas
 from canvasapi.enrollment import Enrollment
@@ -104,6 +106,25 @@ class TestSection(unittest.TestCase):
         self.assertEqual(len(submission_list), 2)
         self.assertIsInstance(submission_list[0], Submission)
 
+    def test_list_multiple_submissions_grouped_param(self, m):
+        register_uris({'section': ['list_multiple_submissions']}, m)
+
+        with warnings.catch_warnings(record=True) as warning_list:
+            warnings.simplefilter('always')
+            submissions = self.section.list_multiple_submissions(grouped=True)
+            submission_list = [submission for submission in submissions]
+
+            # Ensure using the `grouped` param raises a warning
+            self.assertEqual(len(warning_list), 1)
+            self.assertEqual(warning_list[-1].category, UserWarning)
+            self.assertEqual(
+                text_type(warning_list[-1].message),
+                'The `grouped` parameter must be empty. Removing kwarg `grouped`.'
+            )
+
+            self.assertEqual(len(submission_list), 2)
+            self.assertIsInstance(submission_list[0], Submission)
+
     # get_submission()
     def test_get_submission(self, m):
         register_uris({'section': ['get_submission']}, m)

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest pytest-cov pytest-xdist pytest-mock pytest-asyncio
apt-get update apt-get install -y gcc
3.6
requirements.txt dev_requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
attrs==22.2.0
Babel==2.11.0
-e git+https://github.com/ucfopen/canvasapi.git@7eb0ec8ec2d8b9c5b6036edb3a93014b241c4fe6#egg=canvasapi
certifi==2021.5.30
charset-normalizer==2.0.12
coverage==6.2
docutils==0.18.1
execnet==1.9.0
idna==3.10
imagesize==1.4.1
importlib-metadata==4.8.3
iniconfig==1.1.1
Jinja2==3.0.3
MarkupSafe==2.0.1
packaging==21.3
pluggy==1.0.0
py==1.11.0
pycodestyle==2.10.0
pyflakes==3.0.1
Pygments==2.14.0
pyparsing==3.1.4
pytest==7.0.1
pytest-asyncio==0.16.0
pytest-cov==4.0.0
pytest-mock==3.6.1
pytest-xdist==3.0.2
pytz==2025.2
requests==2.27.1
requests-mock==1.12.1
six==1.17.0
snowballstemmer==2.2.0
Sphinx==5.3.0
sphinx-rtd-theme==2.0.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jquery==4.1
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
tomli==1.2.3
typing_extensions==4.1.1
urllib3==1.26.20
zipp==3.6.0

name: canvasapi
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - attrs==22.2.0
      - babel==2.11.0
      - charset-normalizer==2.0.12
      - coverage==6.2
      - docutils==0.18.1
      - execnet==1.9.0
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==4.8.3
      - iniconfig==1.1.1
      - jinja2==3.0.3
      - markupsafe==2.0.1
      - packaging==21.3
      - pluggy==1.0.0
      - py==1.11.0
      - pycodestyle==2.10.0
      - pyflakes==3.0.1
      - pygments==2.14.0
      - pyparsing==3.1.4
      - pytest==7.0.1
      - pytest-asyncio==0.16.0
      - pytest-cov==4.0.0
      - pytest-mock==3.6.1
      - pytest-xdist==3.0.2
      - pytz==2025.2
      - requests==2.27.1
      - requests-mock==1.12.1
      - six==1.17.0
      - snowballstemmer==2.2.0
      - sphinx==5.3.0
      - sphinx-rtd-theme==2.0.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jquery==4.1
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - tomli==1.2.3
      - typing-extensions==4.1.1
      - urllib3==1.26.20
      - zipp==3.6.0
prefix: /opt/conda/envs/canvasapi

tests/test_course.py::TestCourse::test_list_multiple_submissions_grouped_param tests/test_section.py::TestSection::test_list_multiple_submissions_grouped_param
tests/test_course.py::TestCourse::test__str__ tests/test_course.py::TestCourse::test_conclude tests/test_course.py::TestCourse::test_course_files tests/test_course.py::TestCourse::test_create_assignment tests/test_course.py::TestCourse::test_create_assignment_fail tests/test_course.py::TestCourse::test_create_assignment_group tests/test_course.py::TestCourse::test_create_course_section tests/test_course.py::TestCourse::test_create_discussion_topic tests/test_course.py::TestCourse::test_create_external_feed tests/test_course.py::TestCourse::test_create_external_tool tests/test_course.py::TestCourse::test_create_folder tests/test_course.py::TestCourse::test_create_group_category tests/test_course.py::TestCourse::test_create_module tests/test_course.py::TestCourse::test_create_module_fail tests/test_course.py::TestCourse::test_create_page tests/test_course.py::TestCourse::test_create_page_fail tests/test_course.py::TestCourse::test_create_quiz tests/test_course.py::TestCourse::test_create_quiz_fail tests/test_course.py::TestCourse::test_delete tests/test_course.py::TestCourse::test_delete_external_feed tests/test_course.py::TestCourse::test_edit_front_page tests/test_course.py::TestCourse::test_enroll_user tests/test_course.py::TestCourse::test_get_assignment tests/test_course.py::TestCourse::test_get_assignment_group tests/test_course.py::TestCourse::test_get_assignments tests/test_course.py::TestCourse::test_get_course_level_assignment_data tests/test_course.py::TestCourse::test_get_course_level_participation_data tests/test_course.py::TestCourse::test_get_course_level_student_summary_data tests/test_course.py::TestCourse::test_get_discussion_topic tests/test_course.py::TestCourse::test_get_discussion_topics tests/test_course.py::TestCourse::test_get_enrollments tests/test_course.py::TestCourse::test_get_external_tool tests/test_course.py::TestCourse::test_get_external_tools tests/test_course.py::TestCourse::test_get_file tests/test_course.py::TestCourse::test_get_folder tests/test_course.py::TestCourse::test_get_full_discussion_topic tests/test_course.py::TestCourse::test_get_module tests/test_course.py::TestCourse::test_get_modules tests/test_course.py::TestCourse::test_get_page tests/test_course.py::TestCourse::test_get_pages tests/test_course.py::TestCourse::test_get_quiz tests/test_course.py::TestCourse::test_get_quiz_fail tests/test_course.py::TestCourse::test_get_quizzes tests/test_course.py::TestCourse::test_get_recent_students tests/test_course.py::TestCourse::test_get_section tests/test_course.py::TestCourse::test_get_settings tests/test_course.py::TestCourse::test_get_submission tests/test_course.py::TestCourse::test_get_user tests/test_course.py::TestCourse::test_get_user_id_type tests/test_course.py::TestCourse::test_get_user_in_a_course_level_assignment_data tests/test_course.py::TestCourse::test_get_user_in_a_course_level_messaging_data tests/test_course.py::TestCourse::test_get_user_in_a_course_level_participation_data tests/test_course.py::TestCourse::test_get_users tests/test_course.py::TestCourse::test_list_assignment_groups tests/test_course.py::TestCourse::test_list_external_feeds tests/test_course.py::TestCourse::test_list_folders tests/test_course.py::TestCourse::test_list_gradeable_students tests/test_course.py::TestCourse::test_list_group_categories tests/test_course.py::TestCourse::test_list_groups tests/test_course.py::TestCourse::test_list_multiple_submissions tests/test_course.py::TestCourse::test_list_sections tests/test_course.py::TestCourse::test_list_submissions tests/test_course.py::TestCourse::test_list_tabs tests/test_course.py::TestCourse::test_mark_submission_as_read tests/test_course.py::TestCourse::test_mark_submission_as_unread tests/test_course.py::TestCourse::test_preview_html tests/test_course.py::TestCourse::test_reorder_pinned_topics tests/test_course.py::TestCourse::test_reorder_pinned_topics_no_list tests/test_course.py::TestCourse::test_reset tests/test_course.py::TestCourse::test_show_front_page tests/test_course.py::TestCourse::test_subit_assignment_fail tests/test_course.py::TestCourse::test_submit_assignment tests/test_course.py::TestCourse::test_update tests/test_course.py::TestCourse::test_update_settings tests/test_course.py::TestCourse::test_update_submission tests/test_course.py::TestCourse::test_update_tab tests/test_course.py::TestCourse::test_upload tests/test_course.py::TestCourseNickname::test__str__ tests/test_course.py::TestCourseNickname::test_remove tests/test_section.py::TestSection::test__str__ tests/test_section.py::TestSection::test_cross_list_section tests/test_section.py::TestSection::test_decross_list_section tests/test_section.py::TestSection::test_delete tests/test_section.py::TestSection::test_edit tests/test_section.py::TestSection::test_get_enrollments tests/test_section.py::TestSection::test_get_submission tests/test_section.py::TestSection::test_list_multiple_submissions tests/test_section.py::TestSection::test_list_submissions tests/test_section.py::TestSection::test_mark_submission_as_read tests/test_section.py::TestSection::test_mark_submission_as_unread tests/test_section.py::TestSection::test_subit_assignment_fail tests/test_section.py::TestSection::test_submit_assignment tests/test_section.py::TestSection::test_update_submission
canvasapi/course.py canvasapi/section.py
canvasapi/course.py canvasapi/section.py