diff --git a/web/app/models/NetUsage.java b/web/app/models/NetUsage.java
index c1da149a6d9c734ed6c8e5af6696fdc07b8e4987..6fcb2d5e26707ae5f7e935460e7058d3315414d3 100644
--- a/web/app/models/NetUsage.java
+++ b/web/app/models/NetUsage.java
@@ -45,9 +45,9 @@ public class NetUsage implements java.io.Serializable {
         try {
             PreparedStatement st = conn.prepareStatement(
                     "SELECT (dat_id + collect_time - interval '00:02:30'), " +
-                    " sum(down_kbits)/1024/300*8::bigint, sum(up_kbits)/1024/300*8::bigint " +
+                    " (sum(down_kbits)/300)::bigint, (sum(up_kbits)/300)::bigint " +
                     "FROM fact_net_usage " +
-                    "WHERE sch_id=? " +
+                    "WHERE sch_id=? AND dat_id > (current_date - interval '6 months') " +
                     "GROUP BY sch_id, dat_id, collect_time " +
                     "ORDER BY dat_id, collect_time ASC;");
             st.setLong(1, id);
diff --git a/web/public/charts/network.js b/web/public/charts/network.js
index 946ba7213ab99ccb3a6392924ba3bb4fac3061eb..fc7683182749ac0084644d1ee71311805daae87a 100644
--- a/web/public/charts/network.js
+++ b/web/public/charts/network.js
@@ -64,6 +64,7 @@ Charts.load = function(project, region, state, city) {
             tempInput.value = category;
 
             tempForm.appendChild(tempInput);
+            document.body.appendChild(tempForm);
         	tempForm.submit();
         };
     }
diff --git a/web/public/javascripts/school.js b/web/public/javascripts/school.js
index e9772bbb66775a3d5ff5bf841981d1f0c22babd8..1fe2a2d0683cb4d918812e999a6437267d970876 100644
--- a/web/public/javascripts/school.js
+++ b/web/public/javascripts/school.js
@@ -138,6 +138,10 @@ $.fn.loadContent = function() {
                         legend: {
                             enabled: true
                         },
+                        tooltip: {
+                            shared: true,
+                            pointFormat: '<span style="color:{series.color}">{series.name}</span>: <b>{point.y} Kbps</b><br/>'
+                        }, 
                         series : [{
                             name : 'Download',
                             data : data.download,