diff --git a/src/main/java/nl/andrewlalis/teaching_assistant_assistant/config/WebSecurityConfig.java b/src/main/java/nl/andrewlalis/teaching_assistant_assistant/config/WebSecurityConfig.java
index 4b5e133..2034806 100644
--- a/src/main/java/nl/andrewlalis/teaching_assistant_assistant/config/WebSecurityConfig.java
+++ b/src/main/java/nl/andrewlalis/teaching_assistant_assistant/config/WebSecurityConfig.java
@@ -51,8 +51,8 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
                     .and()
 
                 .authorizeRequests() // Only logged in users should be able to see site content.
-                    .antMatchers("/**").authenticated()
-                    .anyRequest().authenticated()
+                    .antMatchers("/**").hasRole("user")
+                    .anyRequest().hasRole("user")
                     .and()
 
                 .formLogin()
@@ -72,6 +72,10 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
                     .deleteCookies("JSESSIONID");
     }
 
+    /**
+     * Configures Spring Security to use a specific password encoder.
+     * @return The password encoder to use.
+     */
     @Bean
     public PasswordEncoder passwordEncoder() {
         return new BCryptPasswordEncoder();
diff --git a/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/BasicEntity.java b/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/BasicEntity.java
index 72f402c..a834a3d 100644
--- a/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/BasicEntity.java
+++ b/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/BasicEntity.java
@@ -38,7 +38,7 @@ public abstract class BasicEntity {
             value = TemporalType.TIMESTAMP
     )
     @CreationTimestamp
-    @Column
+    @Column(nullable = false)
     private Date createdOn;
 
     protected BasicEntity() {}
diff --git a/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/security/UserDetailsService.java b/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/security/UserDetailsService.java
index 24ff5d0..5b2bb16 100644
--- a/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/security/UserDetailsService.java
+++ b/src/main/java/nl/andrewlalis/teaching_assistant_assistant/model/security/UserDetailsService.java
@@ -7,6 +7,9 @@ import org.springframework.stereotype.Service;
 
 import java.util.Optional;
 
+/**
+ * A custom user details service to supply database persistent user information to Spring Security.
+ */
 @Service
 public class UserDetailsService implements org.springframework.security.core.userdetails.UserDetailsService {
 
diff --git a/src/main/resources/templates/register/student.html b/src/main/resources/templates/register/student.html
index 6804cb8..f4afe7a 100644
--- a/src/main/resources/templates/register/student.html
+++ b/src/main/resources/templates/register/student.html
@@ -6,28 +6,27 @@
     <div class="row">
         <div class="col">
             <p>
-                Here you can register to create a new account to access the information provided by this application, whether you are a professor, teaching assistant, or student. After filling out this submission form, you'll receive an email with a link to verify that you are who you say you are, after which your account will be activated.
+                To register as a student, please fill out the form below. Make sure to double-check that all information is entered is accurate.
+            </p>
+            <p>
+                Where the form asks for a <em>Registration Code</em>, please provide the code that has been given to you by your lecturers. This code ensures that you'll join the right course.
             </p>
         </div>
     </div>
 
     <div class="row justify-content-center">
-        <h3>I am a ...</h3>
-    </div>
-
-    <div class="row justify-content-center">
-        <div class="col text-center">
-            <a class="btn btn-primary" th:href="@{/register/student}">Student</a>
-        </div>
-        <div class="col text-center">
-            <a class="btn btn-primary" th:href="@{/register/teaching_assistant}">Teaching Assistant</a>
-        </div>
-        <div class="col text-center">
-            <a class="btn btn-primary" th:href="@{/register/administrator}">Administrator</a>
+        <div class="col">
+            <form action="/register/student" method="post" enctype="application/x-www-form-urlencoded">
+                <div class="form-group">
+                    <label>
+                        Registration Code:
+                        <input type="text" name="registration_code" class="form-control">
+                    </label>
+                </div>
+            </form>
         </div>
     </div>
 
-
 </section>
 
 </body>