diff --git a/mod/workshop/eval/best/classes/privacy/provider.php b/mod/workshop/eval/best/classes/privacy/provider.php
new file mode 100644
index 00000000000..501727655d6
--- /dev/null
+++ b/mod/workshop/eval/best/classes/privacy/provider.php
@@ -0,0 +1,46 @@
+<?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/>.
+
+/**
+ * Provides the class {@link workshopeval_best\privacy\provider}
+ *
+ * @package     workshopeval_best
+ * @category    privacy
+ * @copyright   2018 David Mudrák <david@moodle.com>
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace workshopeval_best\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy API implementation for the Comparison with the best assessment method.
+ *
+ * @copyright 2018 David Mudrák <david@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Explain that this plugin stores no personal data.
+     *
+     * @return string
+     */
+    public static function get_reason() : string {
+        return 'privacy:metadata';
+    }
+}
diff --git a/mod/workshop/eval/best/lang/en/workshopeval_best.php b/mod/workshop/eval/best/lang/en/workshopeval_best.php
index 6af9f37dbaf..e6c813f266d 100644
--- a/mod/workshop/eval/best/lang/en/workshopeval_best.php
+++ b/mod/workshop/eval/best/lang/en/workshopeval_best.php
@@ -33,3 +33,4 @@ $string['comparisonlevel7'] = 'lax';
 $string['comparisonlevel9'] = 'very lax';
 $string['configcomparison'] = 'Default value of the factor that influence the grading evaluation.';
 $string['pluginname'] = 'Comparison with the best assessment';
+$string['privacy:metadata'] = 'The Comparison with the best assessment plugin does not store any personal data. Actual personal data user\'s grades are stored by the Workshop module itself and are attached to the exported submissions and assessments data.';