diff --git a/labs.html b/labs.html
index 9cac31a..c4ae899 100755
--- a/labs.html
+++ b/labs.html
@@ -158,8 +158,6 @@ <h1 class="text-center">Class Schedule</h1>
                         <strong>Readings</strong>
                     </div>
                 </div>
-
-                <!--            LAB 1           -->
                 <div class="row class-entry">
                     <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
                     <div class="col-lg-2 post-preview">
@@ -175,8 +173,6 @@ <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday
                         </ul>
                     </div>
                 </div>
-
-                <!--            LAB 2           -->
                 <div class="row class-entry">
                     <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
                     <div class="col-lg-2 post-preview">
@@ -192,7 +188,6 @@ <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday
                         </ul>
                     </div>
                 </div>
-                <!--            LAB 3           -->
                 <div class="row class-entry">
                     <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
                     <div class="col-lg-2 post-preview">
@@ -208,6 +203,171 @@ <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday
                         </ul>
                     </div>
                 </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>B+ Trees & PA-1 Q&A</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>PA-2 Discussion</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>PA-2 Q&A</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>PA-3 Discussion</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>PA-3 Q&A</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>Query Optimization</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>PA-4 Discussion</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>Concurrency Control</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>PA-4 Q&A</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>Recovery</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
+                <div class="row class-entry">
+                    <script type="text/javascript">document.write("<a id=\"class"+(cday+1)+"\"></a>"); </script>
+                    <div class="col-lg-2 post-preview">
+                        <h4 class="post-subtitle">Lab <script type="text/javascript">document.write(cday+1)</script></h3>
+                        <p class="post-meta"><script type="text/javascript"> document.write(classDay(cday));cday++;</script></p>
+                    </div>
+                    <div class="col-lg-7 post-preview">
+                        <strong>MongoDB</strong>
+                    </div>
+                    <div class="col-lg-3 post-preview">
+                        <ul>
+                            <!-- <li><a tabindex="-1" href="labs/Lab-2.pdf">Slides</a></li> -->
+                        </ul>
+                    </div>
+                </div>
 
             </div>
         </div>