diff --git a/apps/api/src/db/course_authors.py b/apps/api/src/db/course_authors.py
deleted file mode 100644
index 1edaa47f..00000000
--- a/apps/api/src/db/course_authors.py
+++ /dev/null
@@ -1,18 +0,0 @@
-from typing import Optional
-from sqlmodel import Field, SQLModel
-from enum import Enum
-
-
-class CourseAuthorshipEnum(str, Enum):
-    CREATOR = "CREATOR"
-    MAINTAINER = "MAINTAINER"
-    REPORTER = "REPORTER"
-
-
-class CourseAuthor(SQLModel, table=True):
-    id: Optional[int] = Field(default=None, primary_key=True)
-    course_id: int = Field(default=None, foreign_key="course.id")
-    user_id: int = Field(default=None, foreign_key="user.id")
-    authorship: CourseAuthorshipEnum = CourseAuthorshipEnum.CREATOR
-    creation_date: str
-    update_date: str
diff --git a/apps/api/src/db/resource_authors.py b/apps/api/src/db/resource_authors.py
new file mode 100644
index 00000000..3befb846
--- /dev/null
+++ b/apps/api/src/db/resource_authors.py
@@ -0,0 +1,20 @@
+from enum import Enum
+from typing import Optional, Union
+from pydantic import BaseModel
+from sqlalchemy import JSON, Column
+from sqlmodel import Field, SQLModel
+
+
+class ResourceAuthorshipEnum(str, Enum):
+    CREATOR = "CREATOR"
+    MAINTAINER = "MAINTAINER"
+    REPORTER = "REPORTER"
+
+
+class ResourceAuthor(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    resource_uuid: str
+    user_id: int = Field(default=None, foreign_key="user.id")
+    authorship: ResourceAuthorshipEnum = ResourceAuthorshipEnum.CREATOR
+    creation_date: str = ""
+    update_date: str = ""
diff --git a/apps/api/src/db/users.py b/apps/api/src/db/users.py
index 99f19fd7..8042ad3f 100644
--- a/apps/api/src/db/users.py
+++ b/apps/api/src/db/users.py
@@ -36,7 +36,7 @@ class UserRead(UserBase):
 class PublicUser(UserRead):
     pass
 
-class AnonymousUser(UserRead):
+class AnonymousUser(SQLModel):
     id: str = "anonymous"
     username: str = "anonymous"
 
diff --git a/apps/api/src/routers/roles.py b/apps/api/src/routers/roles.py
index 114cc255..6fcb600d 100644
--- a/apps/api/src/routers/roles.py
+++ b/apps/api/src/routers/roles.py
@@ -4,7 +4,7 @@ from src.core.events.database import get_db_session
 from src.db.roles import RoleCreate, RoleUpdate
 from src.security.auth import get_current_user
 from src.services.roles.roles import create_role, delete_role, read_role, update_role
-from src.services.users.schemas.users import PublicUser
+from src.db.users import PublicUser
 
 
 router = APIRouter()
diff --git a/apps/api/src/security/auth.py b/apps/api/src/security/auth.py
index d6691864..3ddad99b 100644
--- a/apps/api/src/security/auth.py
+++ b/apps/api/src/security/auth.py
@@ -1,6 +1,6 @@
 from sqlmodel import Session
 from src.core.events.database import get_db_session
-from src.db.users import User, UserRead
+from src.db.users import AnonymousUser, User, UserRead
 from src.services.users.users import security_get_user
 from config.config import get_learnhouse_config
 from pydantic import BaseModel
@@ -9,7 +9,6 @@ from fastapi.security import OAuth2PasswordBearer
 from jose import JWTError, jwt
 from datetime import datetime, timedelta
 from src.services.dev.dev import isDevModeEnabled
-from src.services.users.schemas.users import AnonymousUser, PublicUser
 from src.services.users.users import security_verify_password
 from src.security.security import ALGORITHM, SECRET_KEY
 from fastapi_jwt_auth import AuthJWT
@@ -100,6 +99,6 @@ async def get_current_user(
         return AnonymousUser()
 
 
-async def non_public_endpoint(current_user: PublicUser):
+async def non_public_endpoint(current_user: UserRead | AnonymousUser):
     if isinstance(current_user, AnonymousUser):
         raise HTTPException(status_code=401, detail="Not authenticated")
diff --git a/apps/api/src/security/rbac/rbac.py b/apps/api/src/security/rbac/rbac.py
index ea2e1838..898ea594 100644
--- a/apps/api/src/security/rbac/rbac.py
+++ b/apps/api/src/security/rbac/rbac.py
@@ -1,17 +1,24 @@
+from math import e
 from typing import Literal
 from fastapi import HTTPException, status, Request
-from src.security.rbac.utils import check_element_type, get_id_identifier_of_element
-from src.services.roles.schemas.roles import RoleInDB
-from src.services.users.schemas.users import UserRolesInOrganization
+from sqlalchemy import func, null, or_
+from sqlmodel import Session, select
+from src.db.collections import Collection
+from src.db.courses import Course
+from src.db.resource_authors import ResourceAuthor, ResourceAuthorshipEnum
+from src.db.roles import Role
+from src.db.user_organizations import UserOrganization
+from src.security.rbac.utils import check_element_type
 
 
 async def authorization_verify_if_element_is_public(
     request,
-    element_id: str,
+    element_uuid: str,
     user_id: str,
     action: Literal["read"],
+    db_session: Session,
 ):
-    element_nature = await check_element_type(element_id)
+    element_nature = await check_element_type(element_uuid)
 
     # Verifies if the element is public
     if (
@@ -20,10 +27,12 @@ async def authorization_verify_if_element_is_public(
         and user_id == "anonymous"
     ):
         if element_nature == "courses":
-            courses = request.app.db["courses"]
-            course = await courses.find_one({"course_id": element_id})
+            statement = select(Course).where(
+                Course.public == True, Course.course_uuid == element_uuid
+            )
+            course = db_session.exec(statement).first()
 
-            if course["public"]:
+            if course:
                 return True
             else:
                 raise HTTPException(
@@ -32,10 +41,12 @@ async def authorization_verify_if_element_is_public(
                 )
 
         if element_nature == "collections":
-            collections = request.app.db["collections"]
-            collection = await collections.find_one({"collection_id": element_id})
+            statement = select(Collection).where(
+                Collection.public == True, Collection.collection_uuid == element_uuid
+            )
+            collection = db_session.exec(statement).first()
 
-            if collection["public"]:
+            if collection:
                 return True
             else:
                 raise HTTPException(
@@ -53,67 +64,65 @@ async def authorization_verify_if_user_is_author(
     request,
     user_id: str,
     action: Literal["read", "update", "delete", "create"],
-    element_id: str,
+    element_uuid: str,
+    db_session: Session,
 ):
     if action == "update" or "delete" or "read":
-        element_nature = await check_element_type(element_id)
-        elements = request.app.db[element_nature]
-        element_identifier = await get_id_identifier_of_element(element_id)
-        element = await elements.find_one({element_identifier: element_id})
-        if user_id in element["authors"]:
-            return True
+        statement = select(ResourceAuthor).where(
+            ResourceAuthor.resource_uuid == element_uuid
+        )
+        resource_author = db_session.exec(statement).first()
+
+        if resource_author:
+            if resource_author.user_id == user_id:
+                if (resource_author.authorship == ResourceAuthorshipEnum.CREATOR) or (
+                    resource_author.authorship == ResourceAuthorshipEnum.MAINTAINER
+                ):
+                    return True
+            else:
+                raise HTTPException(
+                    status_code=status.HTTP_403_FORBIDDEN,
+                    detail="User rights (authorship) : You don't have the right to perform this action",
+                )
         else:
-            return False
-    else:
-        return False
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail="Wrong action (create)",
+            )
 
 
 async def authorization_verify_based_on_roles(
     request: Request,
     user_id: str,
     action: Literal["read", "update", "delete", "create"],
-    roles_list: list[UserRolesInOrganization],
-    element_id: str,
+    element_uuid: str,
+    db_session: Session,
 ):
-    element_type = await check_element_type(element_id)
-    element = request.app.db[element_type]
-    roles = request.app.db["roles"]
+    element_type = await check_element_type(element_uuid)
 
-    # Get the element
-    element_identifier = await get_id_identifier_of_element(element_id)
-    element = await element.find_one({element_identifier: element_id})
+    # Get user roles bound to an organization and standard roles
+    statement = (
+        select(Role)
+        .join(UserOrganization)
+        .where(UserOrganization.user_id == user_id)
+        .where((UserOrganization.id == Role.org_id) | (UserOrganization.id == null))
+    )
 
-    # Get the roles of the user
-    roles_id_list = [role["role_id"] for role in roles_list]
-    roles = await roles.find({"role_id": {"$in": roles_id_list}}).to_list(length=100)
+    user_roles_in_organization_and_standard_roles = db_session.exec(statement).all()
 
-    async def checkRoles():
-        # Check Roles
-        for role in roles:
-            role = RoleInDB(**role)
-            if role.elements[element_type][f"action_{action}"] is True:
+    # Find in roles list if there is a role that matches users action for this type of element
+    for role in user_roles_in_organization_and_standard_roles:
+        role = Role.from_orm(role)
+        if role.rights:
+            rights = role.rights
+            if rights[element_type][f"action_{action}"] is True:
                 return True
             else:
                 return False
-
-    async def checkOrgRoles():
-        # Check Org Roles
-        users = request.app.db["users"]
-        user = await users.find_one({"user_id": user_id})
-        if element is not None:
-            for org in user["orgs"]:
-                if org["org_id"] == element["org_id"]:
-                    if org["org_role"] == "owner" or org["org_role"] == "editor":
-                        return True
-                    else:
-                        return False
-
-    if await checkRoles() or await checkOrgRoles():
-        return True
     else:
         raise HTTPException(
             status_code=status.HTTP_403_FORBIDDEN,
-            detail="User rights (roless) : You don't have the right to perform this action",
+            detail="User rights (roles) : You don't have the right to perform this action",
         )
 
 
@@ -121,15 +130,15 @@ async def authorization_verify_based_on_roles_and_authorship(
     request: Request,
     user_id: str,
     action: Literal["read", "update", "delete", "create"],
-    roles_list: list[UserRolesInOrganization],
-    element_id: str,
+    element_uuid: str,
+    db_session: Session,
 ):
     isAuthor = await authorization_verify_if_user_is_author(
-        request, user_id, action, element_id
+        request, user_id, action, element_uuid, db_session
     )
 
     isRole = await authorization_verify_based_on_roles(
-        request, user_id, action, roles_list, element_id
+        request, user_id, action, element_uuid, db_session
     )
 
     if isAuthor or isRole:
diff --git a/apps/api/src/services/courses/courses.py b/apps/api/src/services/courses/courses.py
index cc69524f..afe4b614 100644
--- a/apps/api/src/services/courses/courses.py
+++ b/apps/api/src/services/courses/courses.py
@@ -1,8 +1,10 @@
 import json
+import resource
 from typing import Literal
 from uuid import uuid4
 from sqlmodel import Session, select
-from src.db.course_authors import CourseAuthor, CourseAuthorshipEnum
+from src import db
+from src.db.resource_authors import ResourceAuthor, ResourceAuthorshipEnum
 from src.db.users import PublicUser, AnonymousUser
 from src.db.courses import Course, CourseCreate, CourseRead, CourseUpdate
 from src.security.rbac.rbac import (
@@ -60,7 +62,7 @@ async def create_course(
 
     # Complete course object
     course.org_id = course.org_id
-    course.course_uuid = str(uuid4())
+    course.course_uuid = str(f"course_{uuid4()}")
     course.creation_date = str(datetime.now())
     course.update_date = str(datetime.now())
 
@@ -76,18 +78,18 @@ async def create_course(
     db_session.refresh(course)
 
     # Make the user the creator of the course
-    course_author = CourseAuthor(
-        course_id=course.id if course.id else 0,
+    resource_author = ResourceAuthor(
+        resource_uuid=course.course_uuid,
         user_id=current_user.id,
-        authorship=CourseAuthorshipEnum.CREATOR,
+        authorship=ResourceAuthorshipEnum.CREATOR,
         creation_date=str(datetime.now()),
         update_date=str(datetime.now()),
     )
 
     # Insert course author
-    db_session.add(course_author)
+    db_session.add(resource_author)
     db_session.commit()
-    db_session.refresh(course_author)
+    db_session.refresh(resource_author)
 
     return CourseRead.from_orm(course)
 
@@ -241,26 +243,23 @@ async def verify_rights(
     course_id: str,
     current_user: PublicUser | AnonymousUser,
     action: Literal["create", "read", "update", "delete"],
+    db_session: Session,
 ):
     if action == "read":
         if current_user.id == "anonymous":
             await authorization_verify_if_element_is_public(
-                request, course_id, str(current_user.id), action
+                request, course_id, str(current_user.id), action, db_session
             )
         else:
-            users = request.app.db["users"]
-            user = await users.find_one({"user_id": str(current_user.id)})
 
             await authorization_verify_based_on_roles_and_authorship(
                 request,
                 str(current_user.id),
                 action,
-                user["roles"],
                 course_id,
+                db_session,
             )
     else:
-        users = request.app.db["users"]
-        user = await users.find_one({"user_id": str(current_user.id)})
 
         await authorization_verify_if_user_is_anon(str(current_user.id))
 
@@ -268,8 +267,8 @@ async def verify_rights(
             request,
             str(current_user.id),
             action,
-            user["roles"],
             course_id,
+            db_session,
         )
 
 
diff --git a/apps/api/src/services/orgs/orgs.py b/apps/api/src/services/orgs/orgs.py
index 54182f0c..40cfdccc 100644
--- a/apps/api/src/services/orgs/orgs.py
+++ b/apps/api/src/services/orgs/orgs.py
@@ -214,7 +214,10 @@ async def get_orgs_by_user(
     statement = (
         select(Organization)
         .join(UserOrganization)
-        .where(Organization.id == UserOrganization.org_id)
+        .where(
+            Organization.id == UserOrganization.org_id,
+            UserOrganization.user_id == user_id,
+        )
     )
     result = db_session.exec(statement)
 
diff --git a/apps/api/src/services/orgs/schemas/__init__.py b/apps/api/src/services/orgs/schemas/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/apps/api/src/services/orgs/schemas/orgs.py b/apps/api/src/services/orgs/schemas/orgs.py
deleted file mode 100644
index 56531357..00000000
--- a/apps/api/src/services/orgs/schemas/orgs.py
+++ /dev/null
@@ -1,28 +0,0 @@
-from typing import Optional
-from pydantic import BaseModel
-
-#### Classes ####################################################
-
-
-class Organization(BaseModel):
-    name: str
-    description: str
-    email: str
-    slug: str
-    logo: Optional[str]
-    default: Optional[bool] = False
-
-
-class OrganizationInDB(Organization):
-    org_id: str
-
-
-class PublicOrganization(Organization):
-    name: str
-    description: str
-    email: str
-    slug: str
-    org_id: str
-
-    def __getitem__(self, item):
-        return getattr(self, item)
diff --git a/apps/api/src/services/roles/roles.py b/apps/api/src/services/roles/roles.py
index 3da8f089..d7ac88e8 100644
--- a/apps/api/src/services/roles/roles.py
+++ b/apps/api/src/services/roles/roles.py
@@ -1,7 +1,7 @@
 from uuid import uuid4
 from sqlmodel import Session, select
+from src.db.users import PublicUser
 from src.db.roles import Role, RoleCreate, RoleUpdate
-from src.services.users.schemas.users import PublicUser
 from fastapi import HTTPException, Request
 from datetime import datetime
 
diff --git a/apps/api/src/services/roles/schemas/__init__.py b/apps/api/src/services/roles/schemas/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/apps/api/src/services/roles/schemas/roles.py b/apps/api/src/services/roles/schemas/roles.py
deleted file mode 100644
index 18b0c34c..00000000
--- a/apps/api/src/services/roles/schemas/roles.py
+++ /dev/null
@@ -1,41 +0,0 @@
-from typing import Literal
-from pydantic import BaseModel
-
-
-# Database Models
-
-class Permission(BaseModel):
-    action_create: bool
-    action_read: bool
-    action_update: bool
-    action_delete: bool
-
-    def __getitem__(self, item):
-        return getattr(self, item)
-
-
-class Elements(BaseModel):
-    courses: Permission
-    users: Permission
-    houses: Permission
-    collections: Permission
-    organizations: Permission
-    coursechapters: Permission
-    activities: Permission
-
-    def __getitem__(self, item):
-        return getattr(self, item)
-
-
-class Role(BaseModel):
-    name: str
-    description: str
-    elements : Elements
-    org_id: str | Literal["*"]
-
-
-class RoleInDB(Role):
-    role_id: str
-    created_at: str
-    updated_at: str
-
diff --git a/apps/api/src/services/users/schemas/__init__.py b/apps/api/src/services/users/schemas/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/apps/api/src/services/users/schemas/users.py b/apps/api/src/services/users/schemas/users.py
deleted file mode 100644
index 2dea0e97..00000000
--- a/apps/api/src/services/users/schemas/users.py
+++ /dev/null
@@ -1,70 +0,0 @@
-from typing import Literal
-from pydantic import BaseModel
-
-
-class UserOrganization(BaseModel):
-    org_id: str
-    org_role: Literal['owner', 'editor', 'member'] 
-
-    def __getitem__(self, item):
-        return getattr(self, item)
-    
-class UserRolesInOrganization(BaseModel):
-    org_id: str
-    role_id: str
-
-    def __getitem__(self, item):
-        return getattr(self, item)
-
-
-
-class User(BaseModel):
-    username: str
-    email: str
-    full_name: str | None = None
-    avatar_url: str | None = None
-    bio: str | None = None
-    
-
-
-class UserWithPassword(User):
-    password: str
-
-
-class UserInDB(User):
-    user_id: str
-    password: str
-    verified: bool | None = False
-    disabled: bool | None = False
-    orgs: list[UserOrganization] = []
-    roles: list[UserRolesInOrganization] = []
-    creation_date: str
-    update_date: str
-
-    def __getitem__(self, item):
-        return getattr(self, item)
-
-    
-
-
-class PublicUser(User):
-    user_id: str
-    orgs: list[UserOrganization] = []
-    roles: list[UserRolesInOrganization] = []
-    creation_date: str
-    update_date: str
-
-class AnonymousUser(BaseModel):
-    user_id: str = "anonymous"
-    username: str = "anonymous"
-    roles: list[UserRolesInOrganization] = [
-        UserRolesInOrganization(org_id="anonymous", role_id="role_anonymous")
-    ]
-    
-
-
-# Forms ####################################################
-
-class PasswordChangeForm(BaseModel):
-    old_password: str
-    new_password: str
diff --git a/apps/api/src/services/users/users.py b/apps/api/src/services/users/users.py
index 55bbab6d..29979fab 100644
--- a/apps/api/src/services/users/users.py
+++ b/apps/api/src/services/users/users.py
@@ -4,6 +4,7 @@ from fastapi import HTTPException, Request, status
 from sqlmodel import Session, select
 from src.db.organizations import Organization
 from src.db.users import (
+    PublicUser,
     User,
     UserCreate,
     UserRead,
@@ -12,7 +13,6 @@ from src.db.users import (
 )
 from src.db.user_organizations import UserOrganization
 from src.security.security import security_hash_password, security_verify_password
-from src.services.users.schemas.users import PublicUser
 
 
 async def create_user(