diff --git a/openedx_events/learning/data.py b/openedx_events/learning/data.py
index 0493b3fb..4de822db 100644
--- a/openedx_events/learning/data.py
+++ b/openedx_events/learning/data.py
@@ -97,9 +97,10 @@ class CourseEnrollmentData:
 
 
 @attr.s(frozen=True)
-class CertificateData:
+class Invalidate:
     """
-    Attributes defined for Open edX Certificate data object.
+    Attributes dAttributes for
+    This is separate from ceritificate data because of how diff the params areefined for Open edX Certificate data object.
 
     Arguments:
         user (UserData): user associated with the Certificate.
@@ -310,3 +311,116 @@ class CourseStaffData:
 
     course_key = attr.ib(type=str)
     user = attr.ib(type=UserData)
+
+
+attr.s(frozen=True)
+class GradeOverrideData:
+    """
+    Attributes defined for the Open edX Grades Override data object.
+
+    user_id (int): identifier of the user to which the grade override belongs
+    course_key_or_id (str): identifier of the course to which the grade override belongs
+    usage_key_or_id (str): identifier of the content that will get a grade override 
+    earned_all (float): the value that the subsection grade will be changed to 
+    earned_graded (float): the value that the subsection grade will be changed to
+    overrider (str): the user creating the override
+    comment (str): reason for the override
+    """
+    used_id = attr.ib(type=int)
+    course_key_or_id = attr.ib(type=str)
+    usage_key_or_id = attr.ib(type=str)
+    earned_all = attr.ib(type=float, default=None)
+    earned_graded = attr.ib(type=float, default=None)
+    overrider = attr.ib(type=str, default=None)
+    comment = attr.ib(type=str, default=None)
+
+
+attr.s(frozen=True)
+class InstructorCompletionData:
+    # TODO: These docstrings!!!
+    """
+    Attributes defined for the
+    """
+    username = attr.ib(type=str)
+    content_id = attr.ib(type=str)
+    course_id = attr.ib(type=str, default=None)
+    requesting_user = attr.ib(type=UserData, default=None)
+
+
+attr.s(frozen=True)
+class CreditRequirementStatusData:
+    """
+    
+    """
+    user_id = attr.id(type=int)
+    course_key_or_id = attr.id(type=str)
+    req_namespace = attr.id(type=str)
+    req_name = attr.id(type=str)
+    status = attr.id(type=str, default=None)
+
+
+attr.s(frozen=True)
+class InvalidateCertificateData:
+    """
+    Attributes for
+    This is separate from ceritificate data because of how diff the params are
+    """
+    user_id = attr.id(type=int)
+    course_id = attr.ib(type=str)
+>>>>>>> 216b643 (feat: signals complete)
+
+
+attr.s(frozen=True)
+class GradeOverrideData:
+    """
+    Attributes defined for the Open edX Grades Override data object.
+
+    user_id (int): identifier of the user to which the grade override belongs
+    course_key_or_id (str): identifier of the course to which the grade override belongs
+    usage_key_or_id (str): identifier of the content that will get a grade override 
+    earned_all (float): the value that the subsection grade will be changed to 
+    earned_graded (float): the value that the subsection grade will be changed to
+    overrider (str): the user creating the override
+    comment (str): reason for the override
+    """
+    used_id = attr.ib(type=int)
+    course_key_or_id = attr.ib(type=str)
+    usage_key_or_id = attr.ib(type=str)
+    earned_all = attr.ib(type=float, default=None)
+    earned_graded = attr.ib(type=float, default=None)
+    overrider = attr.ib(type=str, default=None)
+    comment = attr.ib(type=str, default=None)
+
+
+attr.s(frozen=True)
+class InstructorCompletionData:
+    # TODO: These docstrings!!!
+    """
+    Attributes defined for the
+    """
+    username = attr.ib(type=str)
+    content_id = attr.ib(type=str)
+    course_id = attr.ib(type=str, default=None)
+    requesting_user = attr.ib(type=UserData, default=None)
+
+
+attr.s(frozen=True)
+class CreditRequirementStatusData:
+    """
+    
+    """
+    user_id = attr.id(type=int)
+    course_key_or_id = attr.id(type=str)
+    req_namespace = attr.id(type=str)
+    req_name = attr.id(type=str)
+    status = attr.id(type=str, default=None)
+
+
+attr.s(frozen=True)
+class InvalidateCertificateData:
+    """
+    Attributes for
+    This is separate from ceritificate data because of how diff the params are
+    """
+    user_id = attr.id(type=int)
+    course_id = attr.ib(type=str)
diff --git a/openedx_events/learning/signals.py b/openedx_events/learning/signals.py
index 51fac1f6..98577560 100644
--- a/openedx_events/learning/signals.py
+++ b/openedx_events/learning/signals.py
@@ -14,6 +14,10 @@
     CourseDiscussionConfigurationData,
     CourseEnrollmentData,
     CourseStaffData,
+    CreditRequirementStatusData,
+    GradeOverrideData,
+    InstructorCompletionData,
+    InvalidateCertificateData,
     PersistentCourseGradeData,
     ProgramCertificateData,
     UserData,
@@ -219,3 +223,69 @@
         "course_staff_data": CourseStaffData,
     }
 )
+
+# .. event_type: org.openedx.learning.grade.override.created.v1
+# .. event_name: GRADE_OVERRIDE_CREATED
+# .. event_description: Emitted when a user's grade for a subsection is overriden.
+# .. event_data: GradeOverrideData
+GRADE_OVERRIDE_CREATED = OpenEdxPublicSignal(
+    event_type="org.openedx.learning.grade.override.created.v1",
+    data={
+        "grade_override_data": GradeOverrideData,
+    }
+)
+
+# .. event_type: org.openedx.learning.grade.override.deleted.v1
+# .. event_name: GRADE_OVERRIDE_DELETED
+# .. event_description: Emitted to undo a grade override for a subsection.
+# .. event_data: GradeOverrideData
+GRADE_OVERRIDE_DELETED = OpenEdxPublicSignal(
+    event_type="org.openedx.learning.grade.override.deleted.v1",
+    data={
+        "grade_override_data": GradeOverrideData,
+    }
+)
+
+# .. event_type: org.openedx.learning.all.child.xblocks.completed.v1
+# .. event_name: ALL_CHILD_XBLOCKS_COMPLETED
+# .. event_description: Emitted to mark all the child xblocks of section/subsection/unit as completed.
+# .. event_data: InstructorCompletionData
+ALL_CHILD_XBLOCKS_COMPLETED = OpenEdxPublicSignal(
+    event_type="org.openedx.learning.all.child.xblocks.completed.v1",
+    data={
+        "instructor_completed_data": InstructorCompletionData,
+    }
+)
+
+# .. event_type: org.openedx.learning.all.child.xblocks.reset.v1
+# .. event_name: ALL_CHILD_XBLOCKS_RESET
+# .. event_description: Emitted to reset the state of all child xblocks in a section/subsection/unit.
+# .. event_data: InstructorCompletionData
+ALL_CHILD_XBLOCKS_RESET = OpenEdxPublicSignal(
+    event_type="org.openedx.learning.all.child.xblocks.reset.v1",
+    data={
+        "instructor_completed_data": InstructorCompletionData,
+    }
+)
+
+# .. event_type: org.openedx.learning.credit.requirement.status.set.v1
+# .. event_name: CREDIT_REQUIREMENT_STATUS_SET
+# .. event_description: Creates or modifies a user's credit requirement status for a course.
+# .. event_data: CreditRequirementStatusData
+CREDIT_REQUIREMENT_STATUS_SET = OpenEdxPublicSignal(
+    event_type="org.openedx.learning.set.credit.requirement.status.set.v1",
+    data={
+        "credit_requirement_status_data": CreditRequirementStatusData,
+    }
+)
+
+# .. event_type: org.openedx.learning.credit.requirement.status.data.v1
+# .. event_name: CREDIT_REQUIREMENT_STATUS_REMOVED
+# .. event_description: Deletes a user's credit requirement status for a course.
+# .. event_data: CreditRequirementStatusData
+CREDIT_REQUIREMENT_STATUS_REMOVED = OpenEdxPublicSignal(
+    event_type="org.openedx.learning.remove.credit.requirement.status.v1",
+    data={
+        "credit_requirement_status_data": CreditRequirementStatusData,
+    }
+)