diff --git a/config/chrome/policies/managed/ekklesia-classroom.json b/config/chrome/policies/managed/ekklesia-classroom.json
new file mode 100644
index 0000000..eaa83e7
--- /dev/null
+++ b/config/chrome/policies/managed/ekklesia-classroom.json
@@ -0,0 +1,17 @@
+{
+  "DefaultBrowserSettingEnabled": false,
+  "PromotionalTabsEnabled": false,
+  "MetricsReportingEnabled": false,
+
+  "SyncDisabled": true,
+  "SigninInterceptionEnabled": false,
+  "BrowserAddPersonEnabled": false,
+  "ProfilePickerOnStartupAvailability": 1,
+
+  "PasswordLeakDetectionEnabled": false,
+  "BackgroundModeEnabled": false,
+
+  "ShowHomeButton": true,
+  "HomepageIsNewTabPage": false,
+  "HomepageLocation": "https://app.wonderink.org/"
+}
diff --git a/config/chrome/policies/recommended/ekklesia-classroom.json b/config/chrome/policies/recommended/ekklesia-classroom.json
new file mode 100644
index 0000000..a8e3ec9
--- /dev/null
+++ b/config/chrome/policies/recommended/ekklesia-classroom.json
@@ -0,0 +1,6 @@
+{
+  "RestoreOnStartup": 4,
+  "RestoreOnStartupURLs": [
+    "https://app.wonderink.org/"
+  ]
+}
diff --git a/config/mako/config b/config/mako/config
new file mode 100644
index 0000000..d718a5e
--- /dev/null
+++ b/config/mako/config
@@ -0,0 +1,43 @@
+# Ekklesia Classroom notifications
+# Managed by the ekklesia-classroom package.
+#
+# Matched to the dock: same dark slate (#222632), same hairline white
+# border, same rounded corners, white text. Kept slightly more opaque
+# than the dock so text stays readable over the wallpaper and over video.
+
+font=DejaVu Sans 12
+
+background-color=#222632e6
+text-color=#ffffffff
+border-color=#ffffff21
+progress-color=over #464b5ae6
+
+border-size=1
+border-radius=18
+
+padding=14,18
+margin=18
+
+width=380
+height=160
+
+anchor=top-right
+layer=overlay
+sort=-time
+max-visible=3
+
+markup=1
+format=<b>%s</b>\n%b
+
+icons=1
+max-icon-size=48
+
+default-timeout=6000
+
+[urgency=low]
+default-timeout=4000
+
+[urgency=critical]
+background-color=#3a2632f0
+border-color=#ff8a8a59
+default-timeout=0
diff --git a/config/sway/config b/config/sway/config
index d60c6bc..dcf398c 100644
--- a/config/sway/config
+++ b/config/sway/config
@@ -9,6 +9,9 @@ output * bg /usr/share/backgrounds/ekklesia/classroom-default.png fill
 # Ekklesia Classroom dock
 exec --no-startup-id /usr/local/bin/classroom-dock
 
+# Notifications. Styled by /etc/xdg/mako/config to match the dock.
+exec --no-startup-id /usr/bin/mako
+
 # Keep the interface intentionally minimal.
 # Additional classroom controls are added explicitly by Ekklesia Classroom.
 
diff --git a/packaging/debian/postinst b/packaging/debian/postinst
index e2f202f..5b065db 100755
--- a/packaging/debian/postinst
+++ b/packaging/debian/postinst
@@ -19,6 +19,7 @@ chmod 0644 /home/classroom/.bash_profile
 
 chmod 0755 /usr/local/bin/classroom-browser
 chmod 0755 /usr/local/bin/classroom-window
+chmod 0755 /usr/local/bin/classroom-notify-test
 
 if [ ! -f /etc/ekklesia-classroom/device.conf ]; then
     cat > /etc/ekklesia-classroom/device.conf <<'CONFIG'
diff --git a/scripts/classroom-notify-test b/scripts/classroom-notify-test
new file mode 100755
index 0000000..6a94fd1
--- /dev/null
+++ b/scripts/classroom-notify-test
@@ -0,0 +1,30 @@
+#!/bin/bash
+set -euo pipefail
+
+# Sends a sample notification so the classroom styling can be checked
+# without waiting for a real event.
+#
+#   classroom-notify-test
+#   classroom-notify-test "Title" "Body text"
+#   classroom-notify-test --critical "Parent Call" "Room 3 needs a parent."
+
+urgency=normal
+
+if [[ "${1:-}" == "--critical" ]]; then
+    urgency=critical
+    shift
+elif [[ "${1:-}" == "--low" ]]; then
+    urgency=low
+    shift
+fi
+
+title="${1:-DVD Ready}"
+body="${2:-A disc is ready to play.}"
+
+notify-send \
+    --app-name="Ekklesia Classroom" \
+    --urgency="$urgency" \
+    -- \
+    "$title" "$body"
+
+echo "Sent $urgency notification: $title"
diff --git a/tools/build-release.sh b/tools/build-release.sh
index 0ebf8d8..4b989e1 100755
--- a/tools/build-release.sh
+++ b/tools/build-release.sh
@@ -90,6 +90,10 @@ install -Dm755 \
     "$ROOT/scripts/classroom-window" \
     "$STAGE/usr/local/bin/classroom-window"
 
+install -Dm755 \
+    "$ROOT/scripts/classroom-notify-test" \
+    "$STAGE/usr/local/bin/classroom-notify-test"
+
 install -Dm644 \
     "$ROOT/config/wallpapers/classroom-default.png" \
     "$STAGE/usr/share/backgrounds/ekklesia/classroom-default.png"
@@ -102,6 +106,21 @@ install -Dm644 \
     "$ROOT/config/dock/style.css" \
     "$STAGE/etc/ekklesia-classroom/dock/style.css"
 
+# Notification styling, matched to the dock.
+install -Dm644 \
+    "$ROOT/config/mako/config" \
+    "$STAGE/etc/xdg/mako/config"
+
+# Chrome enterprise policy: suppress first-run and sign-in nags, and pin
+# Home to Wonder Ink. Nothing here restricts where teachers can browse.
+install -Dm644 \
+    "$ROOT/config/chrome/policies/managed/ekklesia-classroom.json" \
+    "$STAGE/etc/opt/chrome/policies/managed/ekklesia-classroom.json"
+
+install -Dm644 \
+    "$ROOT/config/chrome/policies/recommended/ekklesia-classroom.json" \
+    "$STAGE/etc/opt/chrome/policies/recommended/ekklesia-classroom.json"
+
 install -Dm755 \
     "$ROOT/scripts/ekklesia-classroom-update" \
     "$STAGE/usr/local/bin/ekklesia-classroom-update"