diff --git a/courses/serializers.py b/courses/serializers.py
index 3309f1e..3dcf85b 100644
--- a/courses/serializers.py
+++ b/courses/serializers.py
@@ -19,7 +19,7 @@ class MiniLessonSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Lesson
-        fields = ('title', 'free', 'token')
+        fields = ('title', 'free', 'token', 'is_hm')
 
 
 class LessonSerializer(MiniLessonSerializer):
diff --git a/lms/settings.py b/lms/settings.py
index 4c8081b..2a4e59e 100644
--- a/lms/settings.py
+++ b/lms/settings.py
@@ -68,7 +68,7 @@ DATABASES = {
 SESSION_ENGINE = 'redis_sessions.session'
 CELERY_EMAIL_CHUNK_SIZE = 1
 
-DATA_UPLOAD_MAX_MEMORY_SIZE = 12621440
+DATA_UPLOAD_MAX_MEMORY_SIZE = 300000000
 
 CACHES = {
     'default': env.cache(),
diff --git a/progress/migrations/0008_auto_20180227_1803.py b/progress/migrations/0008_auto_20180227_1803.py
new file mode 100644
index 0000000..b1cd9b6
--- /dev/null
+++ b/progress/migrations/0008_auto_20180227_1803.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-02-27 18:03
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('progress', '0007_progresslesson_last_update'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='progress',
+            name='hidden_lessons',
+        ),
+        migrations.AddField(
+            model_name='progress',
+            name='only_watch',
+            field=models.BooleanField(default=False, verbose_name='Только просмотр'),
+        ),
+    ]
diff --git a/progress/models.py b/progress/models.py
index 12a4274..2a6e5dc 100644
--- a/progress/models.py
+++ b/progress/models.py
@@ -7,16 +7,12 @@ from lms.tools import get_empty_list
 
 
 class Progress(models.Model):
-    hidden_lessons = ArrayField(
-        models.UUIDField(verbose_name="Токен урока", unique=True, editable=False),
-        default=get_empty_list,
-        verbose_name='Список скрытых уроков',
-    )
     teacher = models.ForeignKey(to=settings.AUTH_USER_MODEL, verbose_name="Преподователь по умолчанию",
                                 related_name='teacher_progress')
     user = models.ForeignKey(to=settings.AUTH_USER_MODEL, verbose_name='Студент')
     course_token = models.UUIDField(verbose_name="Токен курса", editable=False)
     is_finish = models.BooleanField(verbose_name="Окончен ли курс", default=False)
+    only_watch = models.BooleanField(verbose_name="Только просмотр", default=False)
 
     def progress_status(self, sorted_token_list):
         """
diff --git a/progress/serializers.py b/progress/serializers.py
index e156bd3..ea27df1 100644
--- a/progress/serializers.py
+++ b/progress/serializers.py
@@ -8,7 +8,7 @@ class ProgressSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Progress
-        fields = ('lessons', 'course_token')
+        fields = ('lessons', 'course_token', 'only_watch')
 
     @staticmethod
     def get_lessons(self):
diff --git a/progress/urls.py b/progress/urls.py
index b78ac8f..44b7bd1 100644
--- a/progress/urls.py
+++ b/progress/urls.py
@@ -7,4 +7,5 @@ urlpatterns = [
     url(r'student/$', views.StudentUpdateProgress.as_view()),
     url(r'teacher/$', views.TeacherUpdateProgress.as_view()),
     url(r'set-progress/$', views.SetProgress.as_view()),
+    url(r'get_hw_pay/$', views.get_teachers_pay),
 ]
\ No newline at end of file
diff --git a/progress/views.py b/progress/views.py
index f744103..6536517 100644
--- a/progress/views.py
+++ b/progress/views.py
@@ -3,7 +3,7 @@ import datetime
 
 from django.contrib.auth import get_user_model
 from django.core.exceptions import ValidationError
-from django.http import HttpResponse
+from django.http import HttpResponse, HttpResponseForbidden
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.renderers import JSONRenderer
 from rest_framework.response import Response
@@ -13,7 +13,7 @@ from django.db.models import Q
 from courses.models import Course
 from progress.models import ProgressLesson, Progress
 from progress.serializers import ProgressAnalyticSerializer, ProgressLessonSerializer, ProgressSerializer
-from courses.api import CourseProgressApi
+from courses.api import CourseProgressApi, CourseParamsApi
 from progress.tasks import add_next_lesson
 
 
@@ -23,18 +23,25 @@ class StudentWorkView(APIView):
     @staticmethod
     def get(request, teacher_token):
         client_status = request.GET.get('status', 'in_progress')
-        client_max_body = 50
-        last_id = request.GET.get('last_id', 0)
-        server_status = Q(status='fail') if \
-            client_status == 'not_done' else Q(status='wait') if client_status == 'in_progress' else Q(status='done')
         if request.user.is_authenticated() and request.user.groups.filter(name__in=['teachers', 'admin']).exists():
             try:
-                progress_lessons = ProgressLesson.objects.filter(
-                    ~Q(progress__user__out_key=teacher_token),
-                    server_status,
-                    checker__out_key=teacher_token,
-                    id__gt=last_id
-                )[:client_max_body]
+                if client_status == 'done':
+                    date_from = datetime.datetime.now() - datetime.timedelta(days=7)
+                    progress_lessons = ProgressLesson.objects.filter(
+                        ~Q(progress__user__out_key=teacher_token),
+                        ~Q(comment_tokens__len=0),
+                        status='done',
+                        checker__out_key=teacher_token,
+                        finish_date__gte=date_from,
+                    ).order_by('finish_date')
+
+                else:
+                    server_status = Q(status='fail') if client_status == 'not_done' else Q(status='wait')
+                    progress_lessons = ProgressLesson.objects.filter(
+                        ~Q(progress__user__out_key=teacher_token),
+                        server_status,
+                        checker__out_key=teacher_token,
+                    ).order_by('-last_update')
                 return Response([ProgressLessonSerializer(i).data for i in progress_lessons], status=200)
             except ValidationError:
                 return Response("Bad request", status=400)
@@ -348,3 +355,43 @@ class SetProgress(APIView):
 
         else:
             return Response("Эта функция доступна только сотрудникам персонала", status=403)
+
+
+def get_teachers_pay(request):
+    if not request.user.is_authenticated and (request.user.groups.filter(name="support") or request.user.is_superuser):
+        return HttpResponseForbidden()
+
+    date_from = request.GET.get('from', None)
+    date_to = request.GET.get('to', None)
+    email = request.GET.get('email', None)
+
+    file_name = "teacher_pay_%s" % email
+    file_name = file_name + "__from_%s" % date_from if date_from else file_name
+    file_name = file_name + "__to_%s" % date_to if date_to else file_name
+
+    progress_lessons = ProgressLesson.objects.filter(
+        ~Q(comment_tokens__len=0),
+        checker__email=email,
+        status='done',
+    )
+
+    progress_lessons = progress_lessons.filter(finish_date__lt=date_to) if date_to else progress_lessons
+    progress_lessons = progress_lessons.filter(finish_date__gte=date_from) if date_from else progress_lessons
+
+    response = HttpResponse(content_type='text/csv')
+    response['Content-Disposition'] = 'attachment; filename="%s.csv"' % file_name
+
+    writer = csv.writer(response)
+    writer.writerow(['Почта студента', 'Имя студента', 'Курс', 'Дата', 'Время',])
+
+    for i in progress_lessons.order_by('-finish_date'):
+        course_api = CourseParamsApi(i.progress.course_token)
+        writer.writerow([
+            i.progress.user.email,
+            i.progress.user.get_full_name(),
+            course_api.get_slug_and_title()['title'],
+            i.finish_date.date(),
+            i.finish_date.time(),
+        ])
+
+    return response
diff --git a/requirements.txt b/requirements.txt
index 57e3a0d..b292272 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,6 +15,7 @@ psycopg2==2.7.3.1
 raven==6.2.1
 requests==2.18.4
 Unidecode==0.4.21
+PyJWT==1.5.3
 
 # amqp==2.2.2
 # Babel==2.5.1
diff --git a/storage/api.py b/storage/api.py
index 2b80a8b..1afcf62 100644
--- a/storage/api.py
+++ b/storage/api.py
@@ -1,11 +1,11 @@
 from storage.models import Comment, File
 
 
-def upload_file(original=None, name=None, base64=None, **_kwargs) -> File:
+def upload_file(ext=None, original=None, name=None, base64=None, **_kwargs) -> File:
     if original:
         new_file = File.objects.create(original=original)
     else:
-        new_file = File.objects.upload_as_base64(base64)
+        new_file = File.objects.upload_as_base64(base64, ext)
 
     if name:
         new_file.name = name
diff --git a/storage/models.py b/storage/models.py
index 9946f71..8e1b9d7 100755
--- a/storage/models.py
+++ b/storage/models.py
@@ -1,4 +1,5 @@
 # encoding=utf-8
+
 import base64
 import uuid
 
@@ -8,11 +9,10 @@ from django.db import models
 
 class FileManager(models.Manager):
 
-    def upload_as_base64(self, file_base64):
+    def upload_as_base64(self, file_base64, ext):
         if "data:" in file_base64:
             my_str = file_base64[file_base64.index(";base64,")+8:]
-            content_type = file_base64[:file_base64.index(";base64,")].split('/')[1]
-            file_source = ContentFile(base64.b64decode(my_str), name='time.' + content_type)
+            file_source = ContentFile(base64.b64decode(my_str), name='time.' + ext)
             file = self.create(original=file_source)
             return file
         raise ValueError()