diff --git a/public/index.html b/public/index.html
index ed0ebaf..83d3c15 100644
--- a/public/index.html
+++ b/public/index.html
@@ -10,21 +10,27 @@
     -->
     <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
     <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
-    <!--
-      Notice the use of %PUBLIC_URL% in the tags above.
-      It will be replaced with the URL of the `public` folder during the build.
-      Only files inside the `public` folder can be referenced from the HTML.
+    
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-WFN59DC');</script>
+    <!-- End Google Tag Manager -->
 
-      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
-      work correctly both with client-side routing and a non-root public URL.
-      Learn how to configure a non-root public URL by running `npm run build`.
-    -->
-    <title>React App</title>
+    <title>ECS Grader</title>
   </head>
   <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-WFN59DC"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
+
     <noscript>
       You need to enable JavaScript to run this app.
     </noscript>
+    
     <div id="root"></div>
     <!--
       This HTML file is a template.
