diff --git a/database.py b/database.py
index 3164050..a851884 100644
--- a/database.py
+++ b/database.py
@@ -15,9 +15,18 @@ class Database(object):
     # return list of students and their results for a given test
     def test_grades(self, test_id):
         with sqlite3.connect(self.db) as c:
-            cmd = 'SELECT student_id,name,grade FROM students INNER JOIN tests ON students.number=tests.student_id WHERE test_id==? ORDER BY grade DESC;'
-            results = c.execute(cmd, [test_id])
-            return results.fetchall()
+            # with all tests done by each student:
+            # cmd = 'SELECT student_id,name,grade FROM students INNER JOIN tests ON students.number=tests.student_id WHERE test_id==? ORDER BY grade DESC;'
+
+            # only the best result for each student
+            cmd = '''
+                SELECT student_id, name, MAX(grade)
+                FROM students INNER JOIN tests
+                ON students.number=tests.student_id
+                WHERE test_id==?
+                GROUP BY student_id
+                ORDER BY grade DESC;'''
+            return c.execute(cmd, [test_id]).fetchall()
 
     # get list of students in the database
     def get_students(self):
diff --git a/serve.py b/serve.py
index c6c9dc4..4171b57 100755
--- a/serve.py
+++ b/serve.py
@@ -23,8 +23,7 @@ class Root(object):
         self.database = database.Database(testconf['database'])
         self.auth = AuthController(database=testconf['database'])
         self.templates = TemplateLookup(directories=['templates'], input_encoding='utf-8')
-        self.tags = {'online': set(), 'finished': set()}
-        # self.loggedin = set()  # students currently logged in
+        self.tags = {'online': set(), 'finished': set()}  # should be in application, not server
 
     # --- DEFAULT ------------------------------------------------------------
     # any path, e.g. /xpto/aargh is redirected to the test
diff --git a/templates/students.html b/templates/students.html
index e782fdc..7a66a8f 100644
--- a/templates/students.html
+++ b/templates/students.html
@@ -63,9 +63,7 @@
                                 <div class="input-group">
                                     <input type="password" class="form-control" placeholder="${r[2][:8]}" name="${r[0]}">
                                     <span class="input-group-btn">
-                                        <!-- <button class="btn btn-danger" type="submit">reset</button> -->
                                         <button form="${r[0]}" type="submit" value="submit" class="btn btn-danger">reset</button>
-
                                     </span>
                                 </div><!-- /input-group -->
                             </form>
--
libgit2 0.21.2