diff --git a/stages/models.py b/stages/models.py
index 0ad6bb4..ea67622 100644
--- a/stages/models.py
+++ b/stages/models.py
@@ -1,5 +1,6 @@
-from datetime import date, timedelta
 import json
+from collections import OrderedDict
+from datetime import date, timedelta
 
 from django.db import models
 
@@ -94,6 +95,37 @@ class Teacher(models.Model):
             'report': tot_trav - tot_paye,
         }
 
+    def calc_imputations(self):
+        """
+        Return a tuple for accountings charges
+        """
+        activities = self.calc_activity()
+        imputations = OrderedDict(
+            [('ASA', 0), ('ASSC', 0), ('ASE', 0), ('MP', 0), ('EDEpe', 0), ('EDEps', 0),
+             ('EDS', 0), ('CAS-FPP', 0), ('Direction', 0)]
+        )
+        courses = self.course_set.all()
+
+        for key in imputations:
+            imputations[key] = courses.filter(imputation__contains=key).aggregate(models.Sum('period'))['period__sum'] or 0
+
+        tot = sum(imputations.values())
+        if tot > 0:
+            for key in imputations:
+                imputations[key] += round(imputations[key] / tot * activities['tot_formation'])
+
+        # Split EDE périods in EDEpe and EDEps columns, in proportion
+        ede = courses.filter(imputation='EDE').aggregate(models.Sum('period'))['period__sum'] or 0
+        if ede > 0:
+            pe = imputations['EDEpe']
+            ps = imputations['EDEps']
+            pe_percent = pe / (pe + ps)
+            pe_plus = pe * pe_percent
+            imputations['EDEpe'] += pe_plus
+            imputations['EDEps'] += ede - pe_plus
+
+        return (self.calc_activity(), imputations)
+
 
 class Student(models.Model):
     ext_id = models.IntegerField(null=True, unique=True, verbose_name='ID externe')
@@ -343,6 +375,6 @@ class Course(models.Model):
         verbose_name_plural = 'Cours'
 
     def __str__(self):
-        return '{0} - {1} - {2} - {3} - {4}'.format(
-            self.teacher, self.klass, self.subject, self.period, self.section
+        return '{0} - {1} - {2} - {3}'.format(
+            self.teacher, self.public, self.subject, self.period
         )
diff --git a/stages/tests.py b/stages/tests.py
index 07570bf..4c89196 100644
--- a/stages/tests.py
+++ b/stages/tests.py
@@ -9,15 +9,14 @@ from django.utils.html import escape
 
 from .models import (
     Level, Domain, Section, Klass, Period, Student, Corporation, Availability,
-    CorpContact, Teacher, Training,
+    CorpContact, Teacher, Training, Course,
 )
 from .utils import school_year
 
 
 class StagesTest(TestCase):
     @classmethod
-    def setUpClass(cls):
-        super().setUpClass()
+    def setUpTestData(cls):
         Section.objects.bulk_create([
             Section(name='ASE'), Section(name='ASSC'), Section(name='EDE')
         ])
@@ -159,13 +158,20 @@ class PeriodTest(TestCase):
 
 
 class TeacherTests(TestCase):
-    def setUp(self):
+    @classmethod
+    def setUpTestData(cls):
         User.objects.create_superuser('me', 'me@example.org', 'mepassword')
+        cls.teacher = Teacher.objects.create(
+            first_name='Jeanne', last_name='Dubois', birth_date='1974-08-08'
+        )
+        Course.objects.create(
+            teacher=cls.teacher, period=8, subject='#ASE Colloque', imputation='ASSCFE',
+        )
+        Course.objects.create(
+            teacher=cls.teacher, period=4, subject='Sém. enfance 2', imputation='EDEpe',
+        )
 
     def test_export_charge_sheet(self):
-        Teacher.objects.create(
-            first_name='Laurie', last_name='Bernasconi', birth_date='1974-08-08'
-        )
         change_url = reverse('admin:stages_teacher_changelist')
         self.client.login(username='me', password='mepassword')
         response = self.client.post(change_url, {
@@ -179,6 +185,29 @@ class TeacherTests(TestCase):
         self.assertEqual(response['Content-Type'], 'application/zip')
         self.assertGreater(len(response.content), 200)
 
+    def test_calc_activity(self):
+        expected = {
+            'tot_mandats': 8,
+            'tot_ens': 4,
+            'tot_formation': 2,
+            'tot_trav': 14,
+            'tot_paye': 14,
+            'report': 0,
+        }
+        effective = self.teacher.calc_activity()
+        self.assertEqual(list(effective['mandats']), list(Course.objects.filter(subject__startswith='#')))
+        del effective['mandats']
+        self.assertEqual(effective, expected)
+        # Second time for equivalence test
+        effective = self.teacher.calc_activity()
+        del effective['mandats']
+        self.assertEqual(effective, expected)
+
+    def test_calc_imputations(self):
+        result = self.teacher.calc_imputations()
+        self.assertEqual(result[1]['ASSC'], 9)
+        self.assertEqual(result[1]['EDEpe'], 5)
+
 
 class ImportTests(TestCase):
     def setUp(self):