diff --git a/app/but/bulletin_but.py b/app/but/bulletin_but.py
index 61ee57df15..a62e9c0570 100644
--- a/app/but/bulletin_but.py
+++ b/app/but/bulletin_but.py
@@ -37,13 +37,14 @@ class ResultatsSemestreBUT:
         "modimpls_evals_notes",
         "etud_moy_gen",
         "etud_moy_gen_ranks",
+        "modimpls_evaluations_complete",
     )
 
     def __init__(self, formsemestre):
         self.formsemestre = formsemestre
         self.ues = formsemestre.query_ues().all()
         self.modimpls = formsemestre.modimpls.all()
-        self.etuds = self.formsemestre.etuds.all()
+        self.etuds = self.formsemestre.get_inscrits(include_dem=False)
         self.etud_index = {e.id: idx for idx, e in enumerate(self.etuds)}
         self.saes = [
             m for m in self.modimpls if m.module.module_type == scu.ModuleType.SAE
@@ -77,7 +78,8 @@ class ResultatsSemestreBUT:
             self.sem_cube,
             self.modimpls_evals_poids,
             self.modimpls_evals_notes,
-            _,
+            modimpls_evaluations,
+            self.modimpls_evaluations_complete,
         ) = moy_ue.notes_sem_load_cube(self.formsemestre)
         self.modimpl_inscr_df = inscr_mod.df_load_modimpl_inscr(self.formsemestre)
         self.modimpl_coefs_df, _, _ = moy_ue.df_load_modimpl_coefs(
@@ -151,10 +153,17 @@ class ResultatsSemestreBUT:
         for mi in modimpls:
             mod_idx = self.modimpl_coefs_df.columns.get_loc(mi.id)
             # moyennes indicatives (moyennes de moyennes d'UE)
-            moyennes_etuds = np.nan_to_num(
-                np.nanmean(self.sem_cube[:, mod_idx, :], axis=1),
-                copy=False,
-            )
+            try:
+                moyennes_etuds = np.nan_to_num(
+                    np.nanmean(self.sem_cube[:, mod_idx, :], axis=1),
+                    copy=False,
+                )
+            except RuntimeWarning:  # all nans in np.nanmean (sur certains etuds sans notes valides)
+                pass
+            try:
+                moy_indicative_mod = np.nanmean(self.sem_cube[etud_idx, mod_idx])
+            except RuntimeWarning:  # all nans in np.nanmean
+                pass
             d[mi.module.code] = {
                 "id": mi.id,
                 "titre": mi.module.titre,
@@ -166,15 +175,16 @@ class ResultatsSemestreBUT:
                 ),
                 "moyenne": {
                     # moyenne indicative de module: moyenne des UE, ignorant celles sans notes (nan)
-                    "value": fmt_note(np.nanmean(self.sem_cube[etud_idx, mod_idx])),
+                    "value": fmt_note(moy_indicative_mod),
                     "min": fmt_note(moyennes_etuds.min()),
                     "max": fmt_note(moyennes_etuds.max()),
                     "moy": fmt_note(moyennes_etuds.mean()),
                 },
                 "evaluations": [
                     self.etud_eval_results(etud, e)
-                    for e in mi.evaluations
+                    for eidx, e in enumerate(mi.evaluations)
                     if e.visibulletin
+                    and self.modimpls_evaluations_complete[mi.id][eidx]
                 ],
             }
         return d
diff --git a/app/comp/moy_mod.py b/app/comp/moy_mod.py
index 10da10e21b..ea34ecb072 100644
--- a/app/comp/moy_mod.py
+++ b/app/comp/moy_mod.py
@@ -89,7 +89,7 @@ def check_moduleimpl_conformity(
 
 
 def df_load_modimpl_notes(moduleimpl_id: int) -> tuple:
-    """Construit un dataframe avec toutes les notes des évaluations du module.
+    """Construit un dataframe avec toutes les notes de toutes les évaluations du module.
     colonnes: le nom de la colonne est l'evaluation_id (int)
     index (lignes): etudid (int)
 
@@ -111,9 +111,12 @@ def df_load_modimpl_notes(moduleimpl_id: int) -> tuple:
 
     N'utilise pas de cache ScoDoc.
     """
-    # L'index du dataframe est la liste des étudiants inscrits au semestre:
+    # L'index du dataframe est la liste des étudiants inscrits au semestre, sans les démissionnaires
     etudids = [
-        e.etudid for e in ModuleImpl.query.get(moduleimpl_id).formsemestre.inscriptions
+        e.etudid
+        for e in ModuleImpl.query.get(moduleimpl_id).formsemestre.get_inscrits(
+            include_dem=False
+        )
     ]
     evaluations = Evaluation.query.filter_by(moduleimpl_id=moduleimpl_id).all()
     if evaluations:
@@ -138,9 +141,10 @@ def df_load_modimpl_notes(moduleimpl_id: int) -> tuple:
             index_col="etudid",
             dtype=np.float64,
         )
-        evaluations_completes.append(
+        is_complete = (
             len(eval_df) == nb_inscrits_module or evaluation.publish_incomplete
         )
+        evaluations_completes.append(is_complete)
         # NULL en base => ABS (= -999)
         eval_df.fillna(scu.NOTES_ABSENCE, inplace=True)
         # Ce merge met à NULL les élements non présents
diff --git a/app/comp/moy_ue.py b/app/comp/moy_ue.py
index 90f6a25017..74994f26d3 100644
--- a/app/comp/moy_ue.py
+++ b/app/comp/moy_ue.py
@@ -136,10 +136,12 @@ def notes_sem_load_cube(formsemestre):
         modimpls_evals_poids dict { modimpl.id : evals_poids }
         modimpls_evals_notes dict { modimpl.id : evals_notes }
         modimpls_evaluations dict { modimpl.id : liste des évaluations }
+        modimpls_evaluations_complete: {modimpl_id : liste de booleens (complete/non)}
     """
     modimpls_evals_poids = {}
     modimpls_evals_notes = {}
     modimpls_evaluations = {}
+    modimpls_evaluations_complete = {}
     modimpls_notes = []
     for modimpl in formsemestre.modimpls:
         evals_notes, evaluations, evaluations_completes = moy_mod.df_load_modimpl_notes(
@@ -152,12 +154,14 @@ def notes_sem_load_cube(formsemestre):
         modimpls_evals_poids[modimpl.id] = evals_poids
         modimpls_evals_notes[modimpl.id] = evals_notes
         modimpls_evaluations[modimpl.id] = evaluations
+        modimpls_evaluations_complete[modimpl.id] = evaluations_completes
         modimpls_notes.append(etuds_moy_module)
     return (
         notes_sem_assemble_cube(modimpls_notes),
         modimpls_evals_poids,
         modimpls_evals_notes,
         modimpls_evaluations,
+        modimpls_evaluations_complete,
     )
 
 
diff --git a/app/models/etudiants.py b/app/models/etudiants.py
index 13a71c941e..cddac171ce 100644
--- a/app/models/etudiants.py
+++ b/app/models/etudiants.py
@@ -5,6 +5,7 @@
 """
 
 from app import db
+from app import models
 from app.models import APO_CODE_STR_LEN
 from app.models import SHORT_STR_LEN
 from app.models import CODE_STR_LEN
@@ -98,6 +99,18 @@ class Identite(db.Model):
         ]
         return r[0] if r else None
 
+    def etat_inscription(self, formsemestre_id):
+        """etat de l'inscription de cet étudiant au semestre:
+        False si pas inscrit, ou scu.INSCRIT, DEMISSION, DEF
+        """
+        # voir si ce n'est pas trop lent:
+        ins = models.FormsemestreInscription.query.filter_by(
+            etudid=self.id, formsemestre_id=formsemestre_id
+        ).first()
+        if ins:
+            return ins.etat
+        return False
+
 
 class Adresse(db.Model):
     """Adresse d'un étudiant
diff --git a/app/models/formsemestre.py b/app/models/formsemestre.py
index 7126199aec..105a98eef9 100644
--- a/app/models/formsemestre.py
+++ b/app/models/formsemestre.py
@@ -240,6 +240,15 @@ class FormSemestre(db.Model):
             etudid, self.date_debut.isoformat(), self.date_fin.isoformat()
         )
 
+    def get_inscrits(self, include_dem=False) -> list:
+        """Liste des étudiants inscrits à ce semestre
+        Si all, tous les étudiants, avec les démissionnaires.
+        """
+        if include_dem:
+            return [ins.etud for ins in self.inscriptions]
+        else:
+            return [ins.etud for ins in self.inscriptions if ins.etat == scu.INSCRIT]
+
 
 # Association id des utilisateurs responsables (aka directeurs des etudes) du semestre
 notes_formsemestre_responsables = db.Table(
@@ -386,10 +395,11 @@ class FormsemestreInscription(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     formsemestre_inscription_id = db.synonym("id")
 
-    etudid = db.Column(db.Integer, db.ForeignKey("identite.id"))
+    etudid = db.Column(db.Integer, db.ForeignKey("identite.id"), index=True)
     formsemestre_id = db.Column(
         db.Integer,
         db.ForeignKey("notes_formsemestre.id"),
+        index=True,
     )
     etud = db.relationship(
         Identite,
@@ -400,7 +410,7 @@ class FormsemestreInscription(db.Model):
         backref=db.backref("inscriptions", cascade="all, delete-orphan"),
     )
     # I inscrit, D demission en cours de semestre, DEF si "defaillant"
-    etat = db.Column(db.String(CODE_STR_LEN))
+    etat = db.Column(db.String(CODE_STR_LEN), index=True)
     # etape apogee d'inscription (experimental 2020)
     etape = db.Column(db.String(APO_CODE_STR_LEN))
 
diff --git a/app/scodoc/sco_utils.py b/app/scodoc/sco_utils.py
index c023c738f9..a9f0552a83 100644
--- a/app/scodoc/sco_utils.py
+++ b/app/scodoc/sco_utils.py
@@ -71,6 +71,12 @@ NOTES_NEUTRALISE = -1000.0  # notes non prises en comptes dans moyennes
 NOTES_SUPPRESS = -1001.0  # note a supprimer
 NOTES_ATTENTE = -1002.0  # note "en attente" (se calcule comme une note neutralisee)
 
+# ---- CODES INSCRIPTION AUX SEMESTRES
+# (champ etat de FormsemestreInscription)
+INSCRIT = "I"
+DEMISSION = "D"
+DEF = "DEF"
+
 # Types de modules
 class ModuleType(IntEnum):
     """Code des types de module."""
diff --git a/app/static/css/bulletin-but.css b/app/static/css/bulletin-but.css
index 0ef83dd5ed..76b452bd0e 100644
--- a/app/static/css/bulletin-but.css
+++ b/app/static/css/bulletin-but.css
@@ -7,7 +7,7 @@
     --couleurFondTitresUE: rgb(206,255,235);
     --couleurFondTitresRes: rgb(125, 170, 255);
     --couleurFondTitresSAE: rgb(255, 190, 69);
-    --couleurSecondaire: #0c9;
+    --couleurSecondaire: #fec;
     --couleurIntense: #c09;
     --couleurSurlignage: rgba(232, 255, 132, 0.47);
 }
@@ -132,7 +132,7 @@ section>div:nth-child(1){
 }
 
 .enteteSemestre{
-    color:  var(--couleurSecondaire);
+    color:  black;
     font-weight: bold;
     font-size: 20px;
     margin-bottom: 4px;
@@ -157,7 +157,7 @@ section>div:nth-child(1){
 /***************/
 /* Evaluations */
 /***************/
-.module, .ue{
+.module, .ue {
     background: var(--couleurSecondaire);
     color: #000;
     padding: 4px 32px;
@@ -167,6 +167,9 @@ section>div:nth-child(1){
     margin: 4px 0 2px 0;
     overflow: auto;
 }
+.sae .module, .sae .module h3 {
+    background: #d3ffff;
+}
 h3{
     display: flex;
     align-items: center;
diff --git a/migrations/versions/4f98a8b02c89_index_in_formsemestreinscription.py b/migrations/versions/4f98a8b02c89_index_in_formsemestreinscription.py
new file mode 100644
index 0000000000..179ed98cf4
--- /dev/null
+++ b/migrations/versions/4f98a8b02c89_index_in_formsemestreinscription.py
@@ -0,0 +1,32 @@
+"""index in FormsemestreInscription
+
+Revision ID: 4f98a8b02c89
+Revises: a57a6ee2e3cb
+Create Date: 2021-12-14 16:56:11.034680
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '4f98a8b02c89'
+down_revision = 'a57a6ee2e3cb'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_index(op.f('ix_notes_formsemestre_inscription_etat'), 'notes_formsemestre_inscription', ['etat'], unique=False)
+    op.create_index(op.f('ix_notes_formsemestre_inscription_etudid'), 'notes_formsemestre_inscription', ['etudid'], unique=False)
+    op.create_index(op.f('ix_notes_formsemestre_inscription_formsemestre_id'), 'notes_formsemestre_inscription', ['formsemestre_id'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_notes_formsemestre_inscription_formsemestre_id'), table_name='notes_formsemestre_inscription')
+    op.drop_index(op.f('ix_notes_formsemestre_inscription_etudid'), table_name='notes_formsemestre_inscription')
+    op.drop_index(op.f('ix_notes_formsemestre_inscription_etat'), table_name='notes_formsemestre_inscription')
+    # ### end Alembic commands ###
diff --git a/tests/unit/test_but_ues.py b/tests/unit/test_but_ues.py
index 2bf03fca42..d27463f409 100644
--- a/tests/unit/test_but_ues.py
+++ b/tests/unit/test_but_ues.py
@@ -69,7 +69,7 @@ def test_ue_moy(test_client):
         _ = sco_saisie_notes.notes_add(G.default_user, evaluation1.id, [(etudid, n1)])
         _ = sco_saisie_notes.notes_add(G.default_user, evaluation2.id, [(etudid, n2)])
         # Recalcul des moyennes
-        sem_cube, _, _, _ = moy_ue.notes_sem_load_cube(formsemestre)
+        sem_cube, _, _, _, _ = moy_ue.notes_sem_load_cube(formsemestre)
         etuds = formsemestre.etuds.all()
         etud_moy_ue = moy_ue.compute_ue_moys(
             sem_cube, etuds, modimpls, ues, modimpl_inscr_df, modimpl_coefs_df
@@ -112,7 +112,7 @@ def test_ue_moy(test_client):
         exception_raised = True
     assert exception_raised
     # Recalcule les notes:
-    sem_cube, _, _, _ = moy_ue.notes_sem_load_cube(formsemestre)
+    sem_cube, _, _, _, _ = moy_ue.notes_sem_load_cube(formsemestre)
     etuds = formsemestre.etuds.all()
     etud_moy_ue = moy_ue.compute_ue_moys(
         sem_cube, etuds, modimpls, ues, modimpl_inscr_df, modimpl_coefs_df