diff --git a/app/grad_2025/__init__.py b/app/grad_2025/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/app/grad_2025/models.py b/app/grad_2025/models.py
new file mode 100644
index 00000000..f5b911e8
--- /dev/null
+++ b/app/grad_2025/models.py
@@ -0,0 +1,10 @@
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.models import Base
+
+
+class Grad2025(Base):
+    __tablename__ = "grad_2025"
+
+    id: Mapped[int] = mapped_column(primary_key=True, init=False, autoincrement=True)
+    name: Mapped[str]
diff --git a/app/posts/models.py b/app/posts/models.py
index d4e0d64c..62f1f45c 100644
--- a/app/posts/models.py
+++ b/app/posts/models.py
@@ -3,11 +3,13 @@
 
 from sqlalchemy import (
     ARRAY,
+    Column,
     DateTime,
     Enum,
     ForeignKey,
     Integer,
     String,
+    Table,
     Text,
     UniqueConstraint,
 )
@@ -21,6 +23,24 @@
     from app.users.models import User
 
 
+post_grad_2025_table = Table(
+    "post_grad_2025",
+    Base.metadata,
+    Column(
+        "post_id",
+        Integer,
+        ForeignKey("post.id", ondelete="CASCADE"),
+        primary_key=True,
+    ),
+    Column(
+        "grad_2025_id",
+        Integer,
+        ForeignKey("grad_2025.id", ondelete="CASCADE"),
+        primary_key=True,
+    ),
+)
+
+
 class Post(Base):
     __tablename__ = "post"
 
diff --git a/app/posts/repository.py b/app/posts/repository.py
index add9f660..49e1dde6 100644
--- a/app/posts/repository.py
+++ b/app/posts/repository.py
@@ -1,13 +1,15 @@
 from sqlalchemy import String, and_, case, delete, exists, func, or_, select, update
+from sqlalchemy.dialects.postgresql import insert
 from sqlalchemy.orm import joinedload
 
 from app.category.enums import Category
 from app.common.schemas import FeedCursor
 from app.database.deps import SessionDep
+from app.grad_2025.models import Grad2025
 from app.users.models import User
 from app.utils.dependency import dependency
 
-from .models import Post, PostImage
+from .models import Post, PostImage, post_grad_2025_table
 
 
 @dependency
@@ -124,9 +126,32 @@ async def feed(
         result = await self.session.scalars(stmt)
         return list(result.unique().all())
 
-    async def save(self, *, post: Post) -> Post:
+    async def save(self, *, post: Post, univ_major: str | None = None) -> Post:
         self.session.add(post)
         await self.session.flush()
+
+        if univ_major:
+            grad_2025 = await self.session.scalar(
+                select(Grad2025).where(Grad2025.name == univ_major)
+            )
+
+            if not grad_2025:
+                grad_2025 = Grad2025(name=univ_major)
+                self.session.add(grad_2025)
+                await self.session.flush()
+
+            await self.session.execute(
+                insert(post_grad_2025_table)
+                .values(post_id=post.id, grad_2025_id=grad_2025.id)
+                .on_conflict_do_nothing(
+                    index_elements=[
+                        post_grad_2025_table.c.post_id,
+                        post_grad_2025_table.c.grad_2025_id,
+                    ]
+                )
+            )
+            await self.session.flush()
+
         return post
 
     async def update(
diff --git a/app/posts/schemas.py b/app/posts/schemas.py
index e91d54f0..2e1cc816 100644
--- a/app/posts/schemas.py
+++ b/app/posts/schemas.py
@@ -113,6 +113,7 @@ def from_post(
 
 class PostCreateUpdate(PostBase):
     images: list[PostImageCreate] = Field(min_length=1)
+    univ_major: str | None = None
 
 
 class PostImageMeta(APISchema):
diff --git a/app/posts/service.py b/app/posts/service.py
index 28d5a6f9..4892f9d9 100644
--- a/app/posts/service.py
+++ b/app/posts/service.py
@@ -161,7 +161,9 @@ async def create_post(
                 )
             )
 
-        created_post = await self.post_repository.save(post=created_post)
+        created_post = await self.post_repository.save(
+            post=created_post, univ_major=post.univ_major
+        )
 
         return PostRead.from_post(
             created_post,
diff --git a/migrations/env.py b/migrations/env.py
index 296bded9..75037888 100644
--- a/migrations/env.py
+++ b/migrations/env.py
@@ -8,6 +8,7 @@
 
 import app.auth.models as _
 import app.comments.models as _
+import app.grad_2025.models as _
 import app.like.tables as _
 import app.posts.models as _
 import app.tags.models as _
diff --git a/migrations/versions/2025-12-29_add_grad_2025.py b/migrations/versions/2025-12-29_add_grad_2025.py
new file mode 100644
index 00000000..03248606
--- /dev/null
+++ b/migrations/versions/2025-12-29_add_grad_2025.py
@@ -0,0 +1,44 @@
+"""add grad 2025
+
+Revision ID: 35d8f758dd7f
+Revises: 894cc48da392
+Create Date: 2025-12-29 15:06:53.193867
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "35d8f758dd7f"
+down_revision: Union[str, None] = "894cc48da392"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "grad_2025",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("name", sa.String(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "post_grad_2025",
+        sa.Column("post_id", sa.Integer(), nullable=False),
+        sa.Column("grad_2025_id", sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(["grad_2025_id"], ["grad_2025.id"], ondelete="CASCADE"),
+        sa.ForeignKeyConstraint(["post_id"], ["post.id"], ondelete="CASCADE"),
+        sa.PrimaryKeyConstraint("post_id", "grad_2025_id"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table("post_grad_2025")
+    op.drop_table("grad_2025")
+    # ### end Alembic commands ###
diff --git a/pyproject.toml b/pyproject.toml
index 584e2404..7d68452f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dev = [
 
 [tool.poe.tasks]
 setup = "pre-commit install"
-dev = "fastapi dev app/main.py"
+dev = "fastapi dev app/main.py --host=0.0.0.0"
 prod = "fastapi run app/main.py --host=0.0.0.0"
 typecheck = "pyright"
 lint = "ruff check"