diff --git a/DB.drawio b/DB.drawio
index 93a8c56..abe18c4 100644
--- a/DB.drawio
+++ b/DB.drawio
@@ -1 +1 @@
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\ No newline at end of file
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</diagram></mxfile>
\ No newline at end of file
diff --git a/advlabdb/models.py b/advlabdb/models.py
index 0332e45..d3b1e2a 100644
--- a/advlabdb/models.py
+++ b/advlabdb/models.py
@@ -34,12 +34,15 @@ class Student(db.Model):
 class PartStudent(db.Model):
     # A student doing a specific part
     id = db.Column(db.Integer, primary_key=True)
-    final_part_mark = db.Column(db.Integer, nullable=True)
+    final_part_mark = db.Column(db.Float, nullable=True)
     student_id = db.Column(db.Integer, db.ForeignKey("student.id"), nullable=False)
     part_id = db.Column(db.Integer, db.ForeignKey("part.id"), nullable=False)
     group_id = db.Column(db.Integer, db.ForeignKey("group.id"), nullable=True)
     experiment_marks = db.relationship("ExperimentMark", backref="part_student", lazy=True)
 
+    def __repr__(self):
+        return f"<PartStudent: {self.student} in {self.part}>"
+
 
 class Group(db.Model):
     id = db.Column(db.Integer, primary_key=True)
@@ -159,8 +162,8 @@ class Semester(db.Model):
 class ExperimentMark(db.Model):
     # A mark for a student after a specific experiment
     id = db.Column(db.Integer, primary_key=True)
-    oral_mark = db.Column(db.Integer, nullable=True)
-    protocol_mark = db.Column(db.Integer, nullable=True)
+    oral_mark = db.Column(db.Float, nullable=True)
+    protocol_mark = db.Column(db.Float, nullable=True)
     part_student_id = db.Column(db.Integer, db.ForeignKey("part_student.id"), nullable=False)
     group_experiment_id = db.Column(db.Integer, db.ForeignKey("group_experiment.id"), nullable=False)
     assistant_id = db.Column(
diff --git a/poetry.lock b/poetry.lock
index 6924b40..32f017a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -323,9 +323,20 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "rope"
+version = "0.19.0"
+description = "a python refactoring library..."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.extras]
+dev = ["pytest"]
+
 [[package]]
 name = "sqlalchemy"
-version = "1.4.19"
+version = "1.4.20"
 description = "Database Abstraction Library"
 category = "main"
 optional = false
@@ -392,7 +403,7 @@ locale = ["Babel (>=1.3)"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9"
-content-hash = "6a893e3ebd4bf4ad943714d6187c0b34a988665318819b5bda514dc0eb0ad6da"
+content-hash = "cbd384282803742bf8329353f02d15b5512c5ce72eb075cc1c3158045b9e50df"
 
 [metadata.files]
 appdirs = [
@@ -622,37 +633,40 @@ regex = [
     {file = "regex-2021.4.4-cp39-cp39-win_amd64.whl", hash = "sha256:97f29f57d5b84e73fbaf99ab3e26134e6687348e95ef6b48cfd2c06807005a07"},
     {file = "regex-2021.4.4.tar.gz", hash = "sha256:52ba3d3f9b942c49d7e4bc105bb28551c44065f139a65062ab7912bef10c9afb"},
 ]
+rope = [
+    {file = "rope-0.19.0.tar.gz", hash = "sha256:64e6d747532e1f5c8009ec5aae3e5523a5bcedf516f39a750d57d8ed749d90da"},
+]
 sqlalchemy = [
-    {file = "SQLAlchemy-1.4.19-cp27-cp27m-macosx_10_14_x86_64.whl", hash = "sha256:ddbce8fe4d0190db21db602e38aaf4c158c540b49f1ef7475323ec682a9fbf2d"},
-    {file = "SQLAlchemy-1.4.19-cp27-cp27m-manylinux_2_5_x86_64.manylinux1_x86_64.whl", hash = "sha256:942ca49b7ec7449d2473a6587825c55ad99534ddfc4eee249dd42be3cc1aa8c9"},
-    {file = "SQLAlchemy-1.4.19-cp27-cp27m-win32.whl", hash = "sha256:9c0945c79cbe507b49524e31a4bb8700060bbccb60bb553df6432e176baff3d5"},
-    {file = "SQLAlchemy-1.4.19-cp27-cp27m-win_amd64.whl", hash = "sha256:6fd1b745ade2020a1a7bf1e22536d8afe86287882c81ca5d860bdf231d5854e9"},
-    {file = "SQLAlchemy-1.4.19-cp27-cp27mu-manylinux_2_5_x86_64.manylinux1_x86_64.whl", hash = "sha256:0fb3f73e5009f5a4c9b24469939d3d57cc3ad8099a09c0cfefc47fe45ab7ffbe"},
-    {file = "SQLAlchemy-1.4.19-cp36-cp36m-macosx_10_14_x86_64.whl", hash = "sha256:64eab458619ef759f16f0f82242813d3289e829f8557fbc7c212ca4eadf96472"},
-    {file = "SQLAlchemy-1.4.19-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:311051c06f905774427b4a92dcb3924d6ee563dea3a88176da02fdfc572d0d1d"},
-    {file = "SQLAlchemy-1.4.19-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:a34a7fd3353ee61a1dca72fc0c3e38d4e56bdc2c343e712f60a8c70acd4ef5bf"},
-    {file = "SQLAlchemy-1.4.19-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:2ace9ab2af9d7d7b0e2ff2178809941c56ab8921e38128278192a73a8a1c08a2"},
-    {file = "SQLAlchemy-1.4.19-cp36-cp36m-win32.whl", hash = "sha256:96d3d4a7ead376d738775a1fa9786dc17a31975ec664cea284e53735c79a5686"},
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 toml = [
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diff --git a/pyproject.toml b/pyproject.toml
index ed77ad8..61d5cca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,7 @@ Flask-Admin = ">=1.5.8"
 flake8 = "*"
 black = "*"
 isort = "*"
+rope = "^0.19.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]