diff --git a/CHANGES.md b/CHANGES.md
index 303c2f355..ac43572b2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,10 @@
 # CHANGES
 ## RosarioSIS Student Information System
 
+Changes in 8.9.2
+----------------
+- Fix invalidate User School in session on login in index.php
+
 Changes in 8.9.1
 ----------------
 - Fix regression since 8.6 Mailing Labels widget HTML in Widgets.php
diff --git a/index.php b/index.php
index 4dd6e0929..fd17cc578 100644
--- a/index.php
+++ b/index.php
@@ -188,6 +188,8 @@
 		// Invalidate any active Student session.
 		unset( $_SESSION['STUDENT_ID'] );
 
+		unset( $_SESSION['UserSchool'] );
+
 		$_SESSION['LAST_LOGIN'] = $login_RET[1]['LAST_LOGIN'];
 
 		$failed_login = $login_RET[1]['FAILED_LOGIN'];
@@ -227,6 +229,8 @@
 		// Invalidate any active User session.
 		unset( $_SESSION['STAFF_ID'] );
 
+		unset( $_SESSION['UserSchool'] );
+
 		$_SESSION['LAST_LOGIN'] = $student_RET[1]['LAST_LOGIN'];
 
 		$failed_login = $student_RET[1]['FAILED_LOGIN'];