diff --git a/courses/serializers.py b/courses/serializers.py
index c8034fa..3309f1e 100644
--- a/courses/serializers.py
+++ b/courses/serializers.py
@@ -29,6 +29,31 @@ class LessonSerializer(MiniLessonSerializer):
         exclude = ('id', 'topic', 'key')
 
 
+class TeacherLessonSerializer(MiniLessonSerializer):
+    topic_sort = serializers.SerializerMethodField()
+    topic_title = serializers.SerializerMethodField()
+    course_title = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Lesson
+        fields = ('topic_sort', 'description', 'title', 'course_title', 'token', 'topic_title')
+
+    @staticmethod
+    def get_topic_sort(self):
+        for topic_idx, topic in enumerate(self.topic.course.topic_set.all()):
+            if topic == self.topic:
+                return topic_idx + 1
+        return None
+
+    @staticmethod
+    def get_topic_title(self):
+        return self.topic.title
+
+    @staticmethod
+    def get_course_title(self):
+        return self.topic.course.title
+
+
 class CourseInitSerializer(serializers.ModelSerializer):
 
     class Meta:
diff --git a/courses/urls.py b/courses/urls.py
index 9c73b53..d30f49b 100644
--- a/courses/urls.py
+++ b/courses/urls.py
@@ -4,6 +4,7 @@ from courses import views as views
 
 urlpatterns = [
     url(r'vertex/(?P<token>.+)/$', views.LessonDetail.as_view()),
+    url(r'lesson/teacher/(?P<token>.+)/$', views.LessonInfoView.as_view()),
     url(r'tree/(?P<slug>.+)/$', views.TreeView.as_view()),
     url(r'detail/(?P<slug>.+)/$', views.CourseDetailView.as_view()),
     url(r'^$', views.CourseListView.as_view()),
diff --git a/courses/views.py b/courses/views.py
index 211eab4..3a5547b 100644
--- a/courses/views.py
+++ b/courses/views.py
@@ -4,7 +4,7 @@ from rest_framework.response import Response
 from rest_framework.views import APIView
 from django.contrib.auth import get_user_model
 
-from courses.serializers import CourseDetailSerializer, CourseTreeSerializer, LessonSerializer
+from courses.serializers import CourseDetailSerializer, CourseTreeSerializer, LessonSerializer, TeacherLessonSerializer
 from progress.models import ProgressLesson
 
 
@@ -45,6 +45,20 @@ class CourseDetailView(APIView):
         return Response(CourseDetailSerializer(Course.objects.get(slug=slug)).data, self.status_code)
 
 
+class LessonInfoView(APIView):
+    renderer_classes = (JSONRenderer,)
+    status_code = 200
+
+    def get(self, request, token):
+        try:
+            lesson = Lesson.objects.get(token=token)
+        except Lesson.DoesNotExist:
+            return Response('Урок не найден', status=404)
+        if request.user.is_authenticated and request.user.out_key in lesson.topic.course.teacher_tokens:
+            return Response(TeacherLessonSerializer(lesson).data, self.status_code)
+        return Response("Пользователь не является преподователем по курсу", status=403)
+
+
 class LessonDetail(APIView):
     renderer_classes = (JSONRenderer,)
 
diff --git a/progress/migrations/0007_progresslesson_last_update.py b/progress/migrations/0007_progresslesson_last_update.py
new file mode 100644
index 0000000..a055a52
--- /dev/null
+++ b/progress/migrations/0007_progresslesson_last_update.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-02-25 18:28
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('progress', '0006_auto_20180219_1323'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='progresslesson',
+            name='last_update',
+            field=models.DateTimeField(auto_now=True, verbose_name='Дата последнего изменения'),
+        ),
+    ]
diff --git a/progress/models.py b/progress/models.py
index db2ecec..12a4274 100644
--- a/progress/models.py
+++ b/progress/models.py
@@ -57,6 +57,7 @@ class ProgressLesson(models.Model):
     finish_date = models.DateTimeField(verbose_name='Дата зачтения задания', blank=True, null=True)
     start_date = models.DateTimeField(verbose_name='Дата начала прохождения задания', auto_now_add=True)
     status = models.CharField(choices=STATUSES, default=STATUSES.start, max_length=20)
+    last_update = models.DateTimeField(verbose_name='Дата последнего изменения', auto_now=True)
     comment_tokens = ArrayField(models.UUIDField(verbose_name="Токен комента", editable=False), default=get_empty_list)
 
     def __str__(self):
diff --git a/progress/serializers.py b/progress/serializers.py
index 5467b6d..e156bd3 100644
--- a/progress/serializers.py
+++ b/progress/serializers.py
@@ -39,7 +39,7 @@ class ProgressLessonSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = ProgressLesson
-        exclude = ('id', 'progress', 'checker')
+        exclude = ('progress', 'checker')
 
     @staticmethod
     def get_teacher(self):
diff --git a/progress/views.py b/progress/views.py
index f161389..75382c3 100644
--- a/progress/views.py
+++ b/progress/views.py
@@ -23,6 +23,8 @@ class StudentWorkView(APIView):
     @staticmethod
     def get(request, teacher_token):
         client_status = request.GET.get('status', 'in_progress')
+        client_max_body = request.GET.get('max_body', 20)
+        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():
@@ -31,7 +33,8 @@ class StudentWorkView(APIView):
                     ~Q(progress__user__out_key=teacher_token),
                     server_status,
                     checker__out_key=teacher_token,
-                )
+                    id__gt=last_id
+                )[:client_max_body]
                 return Response([ProgressLessonSerializer(i).data for i in progress_lessons], status=200)
             except ValidationError:
                 return Response("Bad request", status=400)