diff --git a/inc/class.page.php b/inc/class.page.php
--- a/inc/class.page.php
+++ b/inc/class.page.php
@@ -47,6 +47,7 @@ set_include_path(get_include_path() . PA
 $use_captcha = FALSE;
 $admin_enable_purge = FALSE;
 $qtips_always = FALSE;
+$input_warning_banner = FALSE;
 
 $config_inc = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'config.inc';
 if (file_exists($config_inc)) {
diff --git a/inc/config.inc.example b/inc/config.inc.example
--- a/inc/config.inc.example
+++ b/inc/config.inc.example
@@ -134,3 +134,17 @@
  */
 /* $feedback_disk_log = TRUE; */
 /* $feedback_disk_log_file = "/var/log/sp-feedback.log"; */
+
+
+/**
+ * \brief
+ *   A banner to display to users on input.php for temporary warnings.
+ *
+ * Used to inform users about known data problems, etc.
+ *
+ * Set to a string to display a banner. Otherwise, set to FALSE to
+ * hide the banner. Must be a valid XHTML fragment which may be placed
+ * into a <div /> verbatim.
+ */
+/* $input_warning_banner = FALSE; */
+/* $input_warning_banner = '<p>Warning: BIOL-111\'s autocomplete data does not include all sections. Please use <a href="http://csx.calvin.edu/sp/input.php?s=7578">schedule 7578</a> to get a correct BIOL-111 entry.</p>'; */
diff --git a/input.php b/input.php
--- a/input.php
+++ b/input.php
@@ -156,6 +156,13 @@ if (!empty($_REQUEST['selectsemester']))
 
 $inputPage->showSavedScheds($_SESSION);
 ?>
+
+<?php if (!empty($input_warning_banner)): ?>
+<div class="warning">
+  <?php echo $input_warning_banner; ?>
+</div>
+<?php endif; ?>
+
 <p>
   Welcome to SlatePermutate<?php $inputPage->addressStudent(', ', '', FALSE); ?>!
   <?php if (school_has_auto($inputPage->get_school())): ?>
diff --git a/styles/general.css b/styles/general.css
--- a/styles/general.css
+++ b/styles/general.css
@@ -391,3 +391,9 @@ a:hover {
   border: none;
   background: transparent;
 }
+
+.warning
+{
+  background: #ffffdd;
+  border: 1pt solid yellow;
+}