diff --git a/mod/h5pactivity/classes/external/get_user_attempts.php b/mod/h5pactivity/classes/external/get_user_attempts.php
new file mode 100644
index 00000000000..1eabb94c6dc
--- /dev/null
+++ b/mod/h5pactivity/classes/external/get_user_attempts.php
@@ -0,0 +1,277 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This is the external method to return the information needed to list all enrolled user attempts.
+ *
+ * @package    mod_h5pactivity
+ * @since      Moodle 3.11
+ * @copyright  2020 Ilya Tregubov <ilya@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_h5pactivity\external;
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+require_once($CFG->libdir . '/externallib.php');
+
+use mod_h5pactivity\local\manager;
+use mod_h5pactivity\local\attempt;
+use mod_h5pactivity\local\report;
+use mod_h5pactivity\local\report\attempts as report_attempts;
+use external_api;
+use external_function_parameters;
+use external_value;
+use external_multiple_structure;
+use external_single_structure;
+use external_warnings;
+use moodle_exception;
+use context_module;
+use stdClass;
+
+/**
+ * This is the external method to return the information needed to list all enrolled user attempts.
+ *
+ * @copyright  2020 Ilya Tregubov <ilya@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class get_user_attempts extends external_api {
+
+    /**
+     * Webservice parameters.
+     *
+     * @return external_function_parameters
+     */
+    public static function execute_parameters(): external_function_parameters {
+        return new external_function_parameters(
+            [
+                'h5pactivityid' => new external_value(PARAM_INT, 'h5p activity instance id'),
+                'sortorder' => new external_value(PARAM_TEXT,
+                    'sort by this element: id, firstname', VALUE_DEFAULT, 'id ASC'),
+                'page' => new external_value(PARAM_INT, 'current page', VALUE_DEFAULT, -1),
+                'perpage' => new external_value(PARAM_INT, 'items per page', VALUE_DEFAULT, 0),
+                'firstinitial' => new external_value(PARAM_TEXT, 'Users whose first name ' .
+                    'starts with $firstinitial', VALUE_DEFAULT, ''),
+                'lastinitial' => new external_value(PARAM_TEXT, 'Users whose last name ' .
+                    'starts with $lastinitial', VALUE_DEFAULT, ''),
+            ]
+        );
+    }
+
+    /**
+     * Return user attempts information in a h5p activity.
+     *
+     * @throws  moodle_exception if the user cannot see the report
+     * @param  int $h5pactivityid The h5p activity id
+     * @param int $sortorder The sort order
+     * @param int $page page number
+     * @param int $perpage items per page
+     * @param int $firstinitial Users whose first name starts with $firstinitial
+     * @param int $lastinitial Users whose last name starts with $lastinitial
+     * @return stdClass report data
+     */
+    public static function execute(int $h5pactivityid, $sortorder = '', ?int $page = 0,
+            ?int $perpage = 0, $firstinitial = '', $lastinitial = ''): stdClass {
+        [
+            'h5pactivityid' => $h5pactivityid,
+            'sortorder' => $sortorder,
+            'page' => $page,
+            'perpage' => $perpage,
+            'firstinitial' => $firstinitial,
+            'lastinitial' => $lastinitial,
+        ] = external_api::validate_parameters(self::execute_parameters(), [
+            'h5pactivityid' => $h5pactivityid,
+            'sortorder' => $sortorder,
+            'page' => $page,
+            'perpage' => $perpage,
+            'firstinitial' => $firstinitial,
+            'lastinitial' => $lastinitial,
+        ]);
+
+        $warnings = [];
+
+        [$course, $cm] = get_course_and_cm_from_instance($h5pactivityid, 'h5pactivity');
+
+        $context = context_module::instance($cm->id);
+        self::validate_context($context);
+
+        $manager = manager::create_from_coursemodule($cm);
+        $instance = $manager->get_instance();
+        if (!$manager->can_view_all_attempts()) {
+            throw new moodle_exception('nopermissiontoviewattempts', 'error', '', null,
+                'h5pactivity:reviewattempts required view attempts of all enrolled users.');
+        }
+
+        $coursecontext = \context_course::instance($course->id);
+
+        $users = get_enrolled_users($coursecontext, '', 0, 'u.id, u.firstname, u.lastname',
+            $sortorder, $page * $perpage, $perpage);
+
+        $usersattempts = [];
+
+        foreach ($users as $user) {
+
+            if ($firstinitial) {
+                if (strpos($user->firstname, $firstinitial) === false) {
+                    continue;
+                }
+            }
+
+            if ($lastinitial) {
+                if (strpos($user->lastname, $lastinitial) === false) {
+                    continue;
+                }
+            }
+
+            $report = $manager->get_report($user->id);
+            if ($report && $report instanceof report_attempts) {
+                $usersattempts[] = self::export_user_attempts($report, $user->id);
+            } else {
+                $warnings[] = [
+                    'item' => 'user',
+                    'itemid' => $user->id,
+                    'warningcode' => '1',
+                    'message' => "Cannot access user attempts",
+                ];
+            }
+        }
+
+        $result = (object)[
+            'activityid' => $instance->id,
+            'usersattempts' => $usersattempts,
+            'warnings' => $warnings,
+        ];
+
+        return $result;
+    }
+
+    /**
+     * Export attempts data for a specific user.
+     *
+     * @param report $report the report attempts object
+     * @param int $userid the user id
+     * @return stdClass
+     */
+    private static function export_user_attempts(report $report, int $userid): stdClass {
+        $scored = $report->get_scored();
+        $attempts = $report->get_attempts();
+
+        $result = (object)[
+            'userid' => $userid,
+            'attempts' => [],
+        ];
+
+        foreach ($attempts as $attempt) {
+            $result->attempts[] = self::export_attempt($attempt);
+        }
+
+        if (!empty($scored)) {
+            $result->scored = (object)[
+                'title' => $scored->title,
+                'grademethod' => $scored->grademethod,
+                'attempts' => [self::export_attempt($scored->attempt)],
+            ];
+        }
+
+        return $result;
+    }
+
+    /**
+     * Return a data object from an attempt.
+     *
+     * @param attempt $attempt the attempt object
+     * @return stdClass a WS compatible version of the attempt
+     */
+    private static function export_attempt(attempt $attempt): stdClass {
+        $result = (object)[
+            'id' => $attempt->get_id(),
+            'h5pactivityid' => $attempt->get_h5pactivityid(),
+            'userid' => $attempt->get_userid(),
+            'timecreated' => $attempt->get_timecreated(),
+            'timemodified' => $attempt->get_timemodified(),
+            'attempt' => $attempt->get_attempt(),
+            'rawscore' => $attempt->get_rawscore(),
+            'maxscore' => $attempt->get_maxscore(),
+            'duration' => $attempt->get_duration(),
+            'scaled' => $attempt->get_scaled(),
+        ];
+        if ($attempt->get_completion() !== null) {
+            $result->completion = $attempt->get_completion();
+        }
+        if ($attempt->get_success() !== null) {
+            $result->success = $attempt->get_success();
+        }
+        return $result;
+    }
+
+    /**
+     * Describes the get_h5pactivity_access_information return value.
+     *
+     * @return external_single_structure
+     */
+    public static function execute_returns(): external_single_structure {
+        return new external_single_structure([
+            'activityid' => new external_value(PARAM_INT, 'Activity course module ID'),
+            'usersattempts' => new external_multiple_structure(
+                self::get_user_attempts_returns(), 'The complete users attempts list'
+            ),
+            'warnings' => new external_warnings(),
+        ], 'Activity attempts data');
+    }
+
+    /**
+     * Describes the get_h5pactivity_access_information return value.
+     *
+     * @return external_single_structure
+     */
+    private static function get_user_attempts_returns(): external_single_structure {
+        $structure = [
+            'userid' => new external_value(PARAM_INT, 'The user id'),
+            'attempts' => new external_multiple_structure(self::get_user_attempt_returns(), 'The complete attempts list'),
+            'scored' => new external_single_structure([
+                'title' => new external_value(PARAM_NOTAGS, 'Scored attempts title'),
+                'grademethod' => new external_value(PARAM_NOTAGS, 'Grading method'),
+                'attempts' => new external_multiple_structure(self::get_user_attempt_returns(), 'List of the grading attempts'),
+            ], 'Attempts used to grade the activity', VALUE_OPTIONAL),
+        ];
+        return new external_single_structure($structure);
+    }
+
+    /**
+     * Return the external structure of an attempt.
+     *
+     * @return external_single_structure
+     */
+    private static function get_user_attempt_returns(): external_single_structure {
+        $result = new external_single_structure([
+            'id' => new external_value(PARAM_INT, 'ID of the context'),
+            'h5pactivityid' => new external_value(PARAM_INT, 'ID of the H5P activity'),
+            'userid' => new external_value(PARAM_INT, 'ID of the user'),
+            'timecreated' => new external_value(PARAM_INT, 'Attempt creation'),
+            'timemodified' => new external_value(PARAM_INT, 'Attempt modified'),
+            'attempt' => new external_value(PARAM_INT, 'Attempt number'),
+            'rawscore' => new external_value(PARAM_INT, 'Attempt score value'),
+            'maxscore' => new external_value(PARAM_INT, 'Attempt max score'),
+            'duration' => new external_value(PARAM_INT, 'Attempt duration in seconds'),
+            'completion' => new external_value(PARAM_INT, 'Attempt completion', VALUE_OPTIONAL),
+            'success' => new external_value(PARAM_INT, 'Attempt success', VALUE_OPTIONAL),
+            'scaled' => new external_value(PARAM_FLOAT, 'Attempt scaled'),
+        ]);
+        return $result;
+    }
+}
diff --git a/mod/h5pactivity/db/services.php b/mod/h5pactivity/db/services.php
index b1bb73d8d1d..86146c6883e 100644
--- a/mod/h5pactivity/db/services.php
+++ b/mod/h5pactivity/db/services.php
@@ -78,7 +78,16 @@ $functions = [
         'methodname'    => 'execute',
         'classpath'     => '',
         'description'   => 'Log that the h5pactivity was viewed.',
-        'type'          => 'write',
+	'type'          => 'write',
+	'services'      => [MOODLE_OFFICIAL_MOBILE_SERVICE],
+    ],
+    'mod_h5pactivity_get_user_attempts' => [
+        'classname'     => 'mod_h5pactivity\external\get_user_attempts',
+        'methodname'    => 'execute',
+        'classpath'     => '',
+        'description'   => 'Return the information needed to list all enrolled user attempts.',
+        'type'          => 'read',
+        'capabilities'  => 'mod/h5pactivity:reviewattempts',
         'services'      => [MOODLE_OFFICIAL_MOBILE_SERVICE],
     ],
 ];
diff --git a/mod/h5pactivity/tests/external/get_user_attempts_test.php b/mod/h5pactivity/tests/external/get_user_attempts_test.php
new file mode 100644
index 00000000000..4865256ed28
--- /dev/null
+++ b/mod/h5pactivity/tests/external/get_user_attempts_test.php
@@ -0,0 +1,185 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * External function test for get_user_attempts.
+ *
+ * @package    mod_h5pactivity
+ * @category   external
+ * @since      Moodle 3.11
+ * @copyright  2020 Ilya Tregubov <ilya@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_h5pactivity\external;
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+require_once($CFG->dirroot . '/webservice/tests/helpers.php');
+
+use mod_h5pactivity\local\manager;
+use external_api;
+use externallib_advanced_testcase;
+
+/**
+ * External function test for get_user_attempts.
+ *
+ * @package    mod_h5pactivity
+ * @copyright  2020 Ilya Tregubov <ilya@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class get_user_attempts_testcase extends externallib_advanced_testcase {
+
+    /**
+     * Test the behaviour of get_user_attempts getting more than one user at once.
+     *
+     * @dataProvider execute_multipleusers_data
+     * @param string $loginuser the user which calls the webservice
+     * @param string[] $participants the users to get the data
+     * @param string[] $warnings the expected users with warnings
+     * @param string[] $resultusers expected users in the resultusers
+     */
+    public function test_execute_multipleusers(string $loginuser, array $participants,
+            array $warnings, array $resultusers): void {
+        $this->resetAfterTest();
+        $this->setAdminUser();
+
+        $course = $this->getDataGenerator()->create_course();
+        $activity = $this->getDataGenerator()->create_module('h5pactivity',
+            ['course' => $course]);
+
+        $manager = manager::create_from_instance($activity);
+        $cm = $manager->get_coursemodule();
+
+        $users = ['editingteacher' => $this->getDataGenerator()->create_and_enrol($course, 'editingteacher')];
+
+        // Prepare users.
+        foreach ($participants as $participant) {
+            if ($participant == 'noenrolled') {
+                $users[$participant] = $this->getDataGenerator()->create_user();
+            } else {
+                $users[$participant] = $this->getDataGenerator()->create_and_enrol($course, 'student');
+            }
+        }
+
+        // Generate attempts (student1 with 1 attempt, student2 with 2 etc).
+        $generator = $this->getDataGenerator()->get_plugin_generator('mod_h5pactivity');
+
+        $attemptcount = 1;
+        foreach ($users as $key => $user) {
+            if (($key == 'noattempts') || ($key == 'noenrolled') || ($key == 'editingteacher')) {
+                $countattempts[$user->id] = 0;
+            } else {
+                $params = ['cmid' => $cm->id, 'userid' => $user->id];
+                for ($i = 1; $i <= $attemptcount; $i++) {
+                    $generator->create_content($activity, $params);
+                }
+                $countattempts[$user->id] = $attemptcount;
+                $attemptcount++;
+            }
+        }
+
+        // Execute external method.
+        $this->setUser($users[$loginuser]);
+
+        if ($loginuser == 'student1') {
+            $this->expectException('moodle_exception');
+            $this->expectExceptionMessage('h5pactivity:reviewattempts required view attempts' .
+                ' of all enrolled users');
+        }
+        $result = get_user_attempts::execute($activity->id);
+        $result = external_api::clean_returnvalue(
+            get_user_attempts::execute_returns(),
+            $result
+        );
+
+        $this->assertCount(count($warnings), $result['warnings']);
+        // Teacher is excluded.
+        $this->assertCount(count($resultusers), $result['usersattempts']);
+
+        $expectedwarnings = [];
+        foreach ($warnings as $warninguser) {
+            $id = $users[$warninguser]->id;
+            $expectedwarnings[$id] = $warninguser;
+        }
+
+        foreach ($result['warnings'] as $warning) {
+            $this->assertEquals('user', $warning['item']);
+            $this->assertEquals(1, $warning['warningcode']);
+            $this->assertArrayHasKey($warning['itemid'], $expectedwarnings);
+        }
+
+        $expectedusers = [];
+        foreach ($resultusers as $resultuser) {
+            $id = $users[$resultuser]->id;
+            $expectedusers[$id] = $resultuser;
+        }
+
+        foreach ($result['usersattempts'] as $usersattempts) {
+            $this->assertArrayHasKey('userid', $usersattempts);
+            $userid = $usersattempts['userid'];
+            $this->assertArrayHasKey($userid, $expectedusers);
+            $this->assertCount($countattempts[$userid], $usersattempts['attempts']);
+            if ($countattempts[$userid]) {
+                $this->assertArrayHasKey('scored', $usersattempts);
+            }
+        }
+    }
+
+    /**
+     * Data provider for the test_execute_multipleusers.
+     *
+     * @return  array
+     */
+    public function execute_multipleusers_data(): array {
+        return [
+            // Teacher checks.
+            'Teacher checking students with attempts' => [
+                'editingteacher',
+                ['student1', 'student2', 'student3', 'student4', 'student5'],
+                ['editingteacher'],
+                ['student1', 'student2', 'student3', 'student4', 'student5'],
+            ],
+            'Teacher checking 2 students with atempts and one not' => [
+                'editingteacher',
+                ['student1', 'student2', 'noattempts'],
+                ['editingteacher'],
+                ['student1', 'student2', 'noattempts'],
+            ],
+            'Teacher checking no students' => [
+                'editingteacher',
+                [],
+                ['editingteacher'],
+                [],
+            ],
+            'Teacher checking one student and a no enrolled user' => [
+                'editingteacher',
+                ['student1', 'noenrolled'],
+                ['editingteacher'],
+                ['student1'],
+            ],
+
+            // Permission check.
+            'Student checking attempts and another user' => [
+                'student1',
+                ['student1', 'student2'],
+                ['student2'],
+                ['student1'],
+            ],
+        ];
+    }
+}
diff --git a/mod/h5pactivity/version.php b/mod/h5pactivity/version.php
index 1770f7d1af1..726bfe59b04 100644
--- a/mod/h5pactivity/version.php
+++ b/mod/h5pactivity/version.php
@@ -25,5 +25,5 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'mod_h5pactivity';
-$plugin->version = 2021052501;
+$plugin->version = 2021052502;
 $plugin->requires = 2021052500;