diff --git a/sp2324/index.html b/sp2324/index.html
index b15fa0b..fe07711 100644
--- a/sp2324/index.html
+++ b/sp2324/index.html
@@ -327,13 +327,13 @@ <h3>Schedule</h3>
               <td class="tg-vnl4">
                 Intro to learning, sys ID, adaptive control
                 <br>
-                RL I: Model-free methods
+                RL I: Model-free RL - Value-based methods
                 <br>
                 <span style="font-style:italic">Monday: HW4 released</span>
                 <br>
                 <span style="font-style:italic">Tuesday: HW3 due</span>
               <td class="tg-vnl4">
-                <!-- <a href="pdfs/lecture/lecture_15.pdf">Lecture 15</a> -->
+                <a href="pdfs/lecture/lecture_15.pdf">Lecture 15</a>
                 <!-- ; <a href="https://github.com/StanfordASL/AA203-Examples/tree/master/Lecture-15">Code</a> -->
                 <!-- <br> -->
                 <!-- <a href="pdfs/lecture/lecture_16.pdf">Lecture 16</a> -->
@@ -346,7 +346,7 @@ <h3>Schedule</h3>
               <td class="tg-vnl4">
                 <span style="font-style:italic">No lecture (Memorial Day)</span>
                 <br>
-                RL II: Model-based methods
+                RL II: Model-free RL - Policy optimization
               </td>
               <td class="tg-vnl4">
                 <!-- <a href="pdfs/lecture/lecture_17.pdf">Lecture 17</a> -->
@@ -360,9 +360,9 @@ <h3>Schedule</h3>
                 10
               </td>
               <td class="tg-vnl4">
-                RL III
+                RL III: Model-based RL
                 <br>
-                RL IV and conclusions
+                RL IV: Model-based policy optimization and Conclusions
                 <br>
                 <span style="font-style:italic">Monday: HW4 due</span>
                 <br>