diff --git a/main/admin/teacher_time_report_by_session.php b/main/admin/teacher_time_report_by_session.php
new file mode 100644
index 0000000000..5c1dabf4e6
--- /dev/null
+++ b/main/admin/teacher_time_report_by_session.php
@@ -0,0 +1,115 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Generate a teacher time report in platform by session only
+ * @package chamilo.admin
+ */
+$cidReset = true;
+
+require_once '../inc/global.inc.php';
+require_once api_get_path(SYS_CODE_PATH) . 'work/work.lib.php';
+
+api_protect_admin_script();
+
+$em = Database::getManager();
+$sessionsInfo = SessionManager::get_sessions_list([], ['name']);
+$session = null;
+
+$form = new FormValidator('teacher_time_report_by_session');
+$selectSession = $form->addSelect('session', get_lang('Session'), [0 => get_lang('None')]);
+$form->addButtonFilter(get_lang('Filter'));
+
+foreach ($sessionsInfo as $sessionInfo) {
+    $selectSession->addOption($sessionInfo['name'], $sessionInfo['id']);
+}
+
+if ($form->validate()) {
+    $sessionId = $form->exportValue('session');
+    $session = $em
+        ->find('ChamiloCoreBundle:Session', $sessionId);
+}
+
+$data = [];
+
+if ($session) {
+    $sessionCourses = $session->getCourses();
+
+    foreach ($sessionCourses as $sessionCourse) {
+        $course = $sessionCourse->getCourse();
+        $userCourseSubscriptions = $session->getUserCourseSubscriptionsByStatus(
+            $course,
+            \Chamilo\CoreBundle\Entity\Session::COACH
+        );
+
+        foreach ($userCourseSubscriptions as $userCourseSubscription) {
+            $user = $userCourseSubscription->getUser();
+
+            if (!array_key_exists($user->getId(), $data)) {
+                $data[$user->getId()] = [
+                    'code' => $user->getOfficialCode(),
+                    'complete_name' => $user->getCompleteName(),
+                    'time_in_platform' => api_time_to_hms(
+                        Tracking::get_time_spent_on_the_platform($user->getId())
+                    ),
+                    'first_connection' => Tracking::get_first_connection_date($user->getId()),
+                    'last_connection' => Tracking::get_last_connection_date($user->getId()),
+                    'courses' => []
+                ];
+            }
+
+            if (array_key_exists($course->getId(), $data[$user->getId()]['courses'])) {
+                continue;
+            }
+
+            $works = $em
+                ->getRepository('ChamiloCourseBundle:CStudentPublication')
+                ->findByTeacher($user, $course, $session->getId());
+            $lastWork = array_pop($works);
+            $lastFormattedDate = null;
+
+            if ($lastWork) {
+                $lastFormattedDate = api_format_date($lastWork->getSentDate()->getTimestamp(), DATE_TIME_FORMAT_SHORT);
+            }
+
+            $data[$user->getId()]['courses'][$course->getId()] = [
+                'id' => $course->getId(),
+                'title' => $course->getTitle(),
+                'code' => $course->getCode(),
+                'number_of_students' => $sessionCourse->getNbrUsers(),
+                'number_of_works' => count($works),
+                'last_work' => $lastFormattedDate,
+                'time_spent_of_course' => api_time_to_hms(
+                    Tracking::get_time_spent_on_the_course(
+                        $user->getId(),
+                        $course->getId(),
+                        $session->getId()
+                    )
+                )
+            ];
+        }
+    }
+}
+
+$this_section = SECTION_PLATFORM_ADMIN;
+$interbreadcrumb[] = ['url' => 'index.php', 'name' => get_lang('Administration')];
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_CODE_PATH) . 'admin/teacher_time_report.php',
+    'name' => get_lang('TeacherTimeReport')
+];
+$toolName = get_lang('TeacherTimeReportBySession');
+
+$view = new Template($toolName);
+$view->assign('form', $form->returnForm());
+
+if ($session) {
+    $view->assign('session', ['id' => $session->getId(), 'name' => $session->getName()]);
+    $view->assign('data', $data);
+}
+
+$template = $view->get_template('admin/teacher_time_report_by_session.tpl');
+$content = $view->fetch($template);
+
+$view->assign('header', $toolName);
+$view->assign('content', $content);
+$view->display_one_col_template();
diff --git a/main/inc/ajax/model.ajax.php b/main/inc/ajax/model.ajax.php
index 8040f5b301..7dae7b0b06 100755
--- a/main/inc/ajax/model.ajax.php
+++ b/main/inc/ajax/model.ajax.php
@@ -1706,7 +1706,7 @@ if (in_array($action, $allowed_actions)) {
         }
     }
 
-    header('Content-Type: application/json;charset=utf-8');
+    //header('Content-Type: application/json;charset=utf-8');
     echo json_encode($response);
 }
 exit;
diff --git a/main/template/default/admin/teacher_time_report.tpl b/main/template/default/admin/teacher_time_report.tpl
index 3537d26ef3..6c5dda04b9 100644
--- a/main/template/default/admin/teacher_time_report.tpl
+++ b/main/template/default/admin/teacher_time_report.tpl
@@ -30,12 +30,15 @@
         <div class="actions">
             <div class="row">
                 <div class="col-md-12">
-                    <a href="{{ _p.web_self }}?export=pdf&from={{ selectedFrom }}&until={{ selectedUntil }}&course={{ selectedCourse }}&session={{ selectedSession }}&teacher={{ selectedTeacher }}">
+                    <a href="{{ _p.web_self ~ '?' ~ {'export':'pdf','from':selectedFrom,'until':selectedUntil,'course':selectedCourse,'session':selectedSession,'teacher':selectedTeacher}|url_encode }}">
                         {{ 'pdf.png' | img(32, 'ExportToPDF'|get_lang ) }}
                     </a>
-                    <a href="{{ _p.web_self }}?export=xls&from={{ selectedFrom }}&until={{ selectedUntil }}&course={{ selectedCourse }}&session={{ selectedSession }}&teacher={{ selectedTeacher }}">
+                    <a href="{{ _p.web_self ~ '?' ~ {'export':'xls','from':selectedFrom,'until':selectedUntil,'course':selectedCourse,'session':selectedSession,'teacher':selectedTeacher}|url_encode }}">
                          {{ 'export_excel.png' | img(32, 'ExportExcel'|get_lang ) }}
                     </a>
+                    <a href="{{ _p.web_main }}admin/teacher_time_report_by_session.php">
+                        {{ 'session.png'|img(32, 'Sessions'|get_lang) }}
+                    </a>
                 </div>
             </div>
         </div>
diff --git a/main/template/default/admin/teacher_time_report_by_session.tpl b/main/template/default/admin/teacher_time_report_by_session.tpl
new file mode 100644
index 0000000000..281fc4746a
--- /dev/null
+++ b/main/template/default/admin/teacher_time_report_by_session.tpl
@@ -0,0 +1,44 @@
+{{ form }}
+
+{% if session %}
+    <h3 class="page-header">{{ session.name }}</h3>
+
+    {% for row in data %}
+        <div class="table-responsive">
+            <table class="table table-hover table-striped">
+                <thead>
+                    <tr>
+                        <th>{{ 'OfficialCode'|get_lang }}</th>
+                        <th>{{ 'Name'|get_lang }}</th>
+                        <th>{{ 'TimeSpentOnThePlatform'|get_lang }}</th>
+                        <th>{{ 'FirstLoginInPlatform'|get_lang }}</th>
+                        <th>{{ 'LatestLoginInPlatform'|get_lang }}</th>
+
+                        {% for course in row.courses %}
+                            <th>{{ course.code }}</th>
+                            <th>{{ 'NumberOfWorks'|get_lang }}</th>
+                            <th>{{ 'LastWork'|get_lang }}</th>
+                            <th>{{ 'TimeReportForCourseX'|get_lang|format(course.code) }}</th>
+                        {% endfor %}
+                    </tr>
+                </thead>
+                <tbody>
+                    <tr>
+                        <td>{{ row.code }}</td>
+                        <td>{{ row.complete_name }}</td>
+                        <td>{{ row.time_in_platform }}</td>
+                        <td>{{ row.first_connection }}</td>
+                        <td>{{ row.last_connection }}</td>
+
+                        {% for course in row.courses %}
+                            <td>{{ course.number_of_students }}</td>
+                            <td>{{ course.number_of_works }}</td>
+                            <td>{{ course.last_work }}</td>
+                            <td>{{ course.time_spent_of_course }}</td>
+                        {% endfor %}
+                    </tr>
+                </tbody>
+            </table>
+        </div>
+    {% endfor %}
+{% endif %}
diff --git a/main/work/work.lib.php b/main/work/work.lib.php
index 0ac4900b1b..69cfd103eb 100755
--- a/main/work/work.lib.php
+++ b/main/work/work.lib.php
@@ -1499,6 +1499,7 @@ function getWorkListTeacher(
                     $where_condition
                 ORDER BY $column $direction
                 LIMIT $start, $limit";
+        echo "<pre>$sql</pre>";
         $result = Database::query($sql);
 
         if ($getCount) {
diff --git a/src/Chamilo/CourseBundle/Entity/CStudentPublication.php b/src/Chamilo/CourseBundle/Entity/CStudentPublication.php
index 360bd6e835..2fb6773c71 100644
--- a/src/Chamilo/CourseBundle/Entity/CStudentPublication.php
+++ b/src/Chamilo/CourseBundle/Entity/CStudentPublication.php
@@ -15,7 +15,7 @@ use Doctrine\ORM\Mapping as ORM;
  *      @ORM\Index(name="session_id", columns={"session_id"})
  *  }
  * )
- * @ORM\Entity
+ * @ORM\Entity(repositoryClass="Chamilo\CourseBundle\Entity\Repository\CStudentPublicationRepository")
  */
 class CStudentPublication
 {
diff --git a/src/Chamilo/CourseBundle/Entity/Repository/CStudentPublicationRepository.php b/src/Chamilo/CourseBundle/Entity/Repository/CStudentPublicationRepository.php
new file mode 100644
index 0000000000..1ef4fb6e78
--- /dev/null
+++ b/src/Chamilo/CourseBundle/Entity/Repository/CStudentPublicationRepository.php
@@ -0,0 +1,53 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\CourseBundle\Entity\Repository;
+
+use Chamilo\CoreBundle\Entity\Course;
+use Chamilo\UserBundle\Entity\User;
+use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\Query\Expr;
+use Doctrine\ORM\Query\Expr\Join;
+use Doctrine\ORM\Query\Expr\OrderBy;
+
+class CStudentPublicationRepository extends EntityRepository
+{
+    /**
+     * Find all the works registered by a teacher
+     * @param User $user
+     * @param Course $course
+     * @param int $sessionId Optional
+     * @param int $groupId Optional
+     * @return array
+     */
+    public function findByTeacher(User $user, Course $course, $sessionId = 0, $groupId = 0)
+    {
+        $qb = $this->createQueryBuilder('w');
+        return $qb
+            ->leftJoin(
+                'ChamiloCourseBundle:CStudentPublicationAssignment',
+                'a',
+                Join::WITH,
+                'a.publicationId = w.iid AND a.cId = w.cId'
+            )
+            ->where(
+                $qb->expr()->andX(
+                    $qb->expr()->eq('w.cId', ':course'),
+                    $qb->expr()->eq('w.sessionId', ':session'),
+                    $qb->expr()->in('w.active', [0, 1]),
+                    $qb->expr()->eq('w.parentId', 0),
+                    $qb->expr()->eq('w.postGroupId', ':group'),
+                    $qb->expr()->eq('w.userId', ':user')
+                )
+            )
+            ->orderBy('w.sentDate', 'DESC')
+            ->setParameters([
+                'course' => intval($course->getId()),
+                'session' => intval($sessionId),
+                'group' => intval($groupId),
+                'user' => $user->getId()
+            ])
+            ->getQuery()
+            ->getResult();
+    }
+}
\ No newline at end of file