diff --git a/changes/8909.scripts.rst b/changes/8909.scripts.rst
new file mode 100644
index 0000000000..0addc426d1
--- /dev/null
+++ b/changes/8909.scripts.rst
@@ -0,0 +1 @@
+Remove the outdated schema_editor script.
diff --git a/jwst/datamodels/__init__.py b/jwst/datamodels/__init__.py
index a3d64a70e3..508ac27400 100644
--- a/jwst/datamodels/__init__.py
+++ b/jwst/datamodels/__init__.py
@@ -31,7 +31,7 @@
 _jwst_models = ["ModelContainer", "SourceModelContainer", "ModelLibrary"]
 
 # Deprecated modules in stdatamodels
-_deprecated_modules = ['schema']
+_deprecated_modules = ['schema', 'schema_editor']
 
 # Deprecated models in stdatamodels
 _deprecated_models: list[str] = []
@@ -52,6 +52,6 @@
         sys.modules[f"jwst.datamodels.{attr}"] = obj
 
 # Add a few submodules to sys.modules without exposing them locally
-for _submodule_name in ['schema_editor', 'validate']:
+for _submodule_name in ['validate']:
     _submodule = importlib.import_module(f"stdatamodels.jwst.datamodels.{_submodule_name}")
     sys.modules[f"jwst.datamodels.{_submodule_name}"] = _submodule
diff --git a/jwst/regtest/test_schema_editor.py b/jwst/regtest/test_schema_editor.py
deleted file mode 100644
index bc111133a6..0000000000
--- a/jwst/regtest/test_schema_editor.py
+++ /dev/null
@@ -1,118 +0,0 @@
-"""Tests for the schema editor
-
-Notes
------
-The tests do not have coverage. The original code was written without tests.
-The tests here are for later modifications.
-"""
-import os
-from pathlib import Path
-import yaml
-
-import pytest
-
-import stdatamodels.jwst.datamodels.schema_editor as se
-
-from jwst.regtest.regtestdata import text_diff
-from jwst.lib.file_utils import pushdir
-
-# Define data locations in artifactory
-KEYWORD_DB = 'datamodels/keyword_db'
-FIXED_SCHEMA = 'fixed'
-SCHEMA_TRUTH = 'truth/test_schema_editor'
-
-
-@pytest.fixture(scope='module')
-def keyword_db(rtdata_module):
-    """Define the keyword database"""
-    rt = rtdata_module
-
-    keyword_db = Path('keyword_db')
-    keyword_db.mkdir()
-    with pushdir(str(keyword_db)):
-        schemas = rt.data_glob(KEYWORD_DB, glob='*.json')
-        for schema in schemas:
-            rt.get_data(schema)
-
-    return keyword_db
-
-
-@pytest.fixture(scope='module')
-def model_db():
-    """Create a full Model_db"""
-    models = se.Model_db()
-    return models
-
-
-@pytest.fixture(scope='module')
-def run_editor_full(tmp_cwd_module, keyword_db):
-    """Just run the editor"""
-
-    editor = se.Schema_editor(
-        input=str(keyword_db), output=FIXED_SCHEMA,
-        add=True, delete=True, edit=True, rename=True
-    )
-    editor.change()
-
-    # The fixed schema live in a date-stamped folder under FIXED_SCHEMA.
-    # It will be the only folder, so we can just return the first from the list.
-    return os.path.join(FIXED_SCHEMA, os.listdir(FIXED_SCHEMA)[0])
-
-
-@pytest.mark.bigdata
-def test_limit_datamodels_from_file(tmp_cwd_module, model_db, keyword_db, rtdata_module):
-    """Test limiting datamodels from Schema_editor"""
-
-    # Create the exclusion file.
-    exclude = list(model_db)[1:]
-    exclude_path = 'exclude.yaml'
-    with open(exclude_path, 'w') as fh:
-        yaml.dump(exclude, fh)
-
-    # Run the editor
-    editor = se.Schema_editor(input=str(keyword_db), exclude_file=exclude_path,
-                              list=True, rename=True)
-    editor.change()
-    assert len(editor.model_db) == 1
-
-
-def test_limit_datamodels(model_db):
-    """Limit the datamodel list"""
-
-    # Reload the models but exclude everything except the first model.
-    exclude_list = list(model_db)[1:]
-    models_limited = se.Model_db(exclude=exclude_list)
-    assert len(models_limited) == 1
-
-
-@pytest.mark.bigdata
-@pytest.mark.parametrize(
-    'schema',
-    ['core.schema.yaml',
-     'extract1dimage.schema.yaml',
-     'guider_meta.schema.yaml',
-     'ifucube.schema.yaml',
-     'keyword_exptype.schema.yaml', 'keyword_pband.schema.yaml', 'keyword_readpatt.schema.yaml',
-     'multiextract1d.schema.yaml', 'multispec.schema.yaml',
-     'pathloss.schema.yaml',
-     'referencefile.schema.yaml',
-     'slitmeta.schema.yaml',
-     'wcsinfo.schema.yaml', ]
-)
-def test_full_run(tmp_cwd_module, schema, run_editor_full, rtdata_module):
-    """Check fixed schema files"""
-    rt = rtdata_module
-    rt.output = os.path.join(run_editor_full, schema)
-    rt.get_truth(SCHEMA_TRUTH + '/' + schema)
-
-    assert text_diff(rt.output, rt.truth)
-
-
-@pytest.mark.bigdata
-def test_no_option_warning(tmp_cwd_module, keyword_db):
-    """If no operations is given, raise an error"""
-    editor = se.Schema_editor(
-        input=keyword_db
-    )
-    with pytest.raises(RuntimeError):
-        editor.change()
diff --git a/jwst/scripts/schema_editor.py b/jwst/scripts/schema_editor.py
deleted file mode 100755
index 941b04d751..0000000000
--- a/jwst/scripts/schema_editor.py
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright (C) 2018 Association of Universities for Research in Astronomy (AURA)
-
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
-
-#     1. Redistributions of source code must retain the above copyright
-#       notice, this list of conditions and the following disclaimer.
-
-#     2. Redistributions in binary form must reproduce the above
-#       copyright notice, this list of conditions and the following
-#       disclaimer in the documentation and/or other materials provided
-#       with the distribution.
-
-#     3. The name of AURA and its representatives may not be used to
-#       endorse or promote products derived from this software without
-#       specific prior written permission.
-
-# THIS SOFTWARE IS PROVIDED BY AURA ``AS IS'' AND ANY EXPRESS OR IMPLIED
-# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL AURA BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
-# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-# DAMAGE.
-
-from stdatamodels.jwst.datamodels import schema_editor
-
-
-def main():
-    options = schema_editor.Options()
-    editor = schema_editor.Schema_editor()
-    editor.change(options)
-
-
-if __name__ == '__main__':
-    main()
diff --git a/jwst/scripts/tests/test_scripts.py b/jwst/scripts/tests/test_scripts.py
index 18e702b597..b9ba4e8d08 100644
--- a/jwst/scripts/tests/test_scripts.py
+++ b/jwst/scripts/tests/test_scripts.py
@@ -11,7 +11,6 @@
     'create_data',
     'okify_regtests',
     'pointing_summary',
-    'schema_editor',
     'schemadoc',
     'set_telescope_pointing',
     'set_telescope_pointing.py',
diff --git a/pyproject.toml b/pyproject.toml
index 489fea3c68..b615cd49e6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -77,7 +77,6 @@ csvconvert = "jwst.csv_tools.csvconvert:CSVConvertScript"
 exp_to_source = "jwst.exp_to_source.main:Main"
 okify_regtests = "jwst.scripts.okify_regtests:main"
 pointing_summary = "jwst.scripts.pointing_summary:main"
-schema_editor = "jwst.scripts.schema_editor:main"
 schemadoc = "jwst.scripts.schemadoc:main"
 set_telescope_pointing = "jwst.scripts.set_telescope_pointing:main"
 "set_telescope_pointing.py" = "jwst.scripts.set_telescope_pointing:deprecated_name"