diff --git a/package-lock.json b/package-lock.json
index b6f5edf..f1c0ee8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "siteforge",
-  "version": "2.11.0",
+  "version": "2.11.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "siteforge",
-      "version": "2.11.0",
+      "version": "2.11.1",
       "dependencies": {
         "@aws-sdk/client-s3": "^3.1135.0",
         "@dnd-kit/core": "^6.3.1",
diff --git a/package.json b/package.json
index 3a31868..c39a0b0 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "2.11.0",
+  "version": "2.11.1",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/server/routes/study-comments.js b/server/routes/study-comments.js
index 2037ec7..e31d37b 100644
--- a/server/routes/study-comments.js
+++ b/server/routes/study-comments.js
@@ -1,6 +1,6 @@
 import { randomUUID } from 'node:crypto'
 import { requireAdminAuth } from '../auth.js'
-import { requireStudyAuth, normalizeStudySlug, normalizeLessonSectionId, hasStudyAccess, findStudyUserById, getCommunityDisplayName } from '../study-helpers.js'
+import { requireStudyAuth, normalizeStudySlug, normalizeLessonSectionId, hasStudyAccess, findStudyUserById, getCommunityDisplayName, isStudyDiscussionOpen, DISCUSSION_CLOSED_MESSAGE } from '../study-helpers.js'
 import { state } from '../state.js'
 import { queueStudyCommentsWrite } from '../data.js'
 import { MAX_STUDY_COMMENTS, MAX_STUDY_COMMENT_LENGTH } from '../config.js'
@@ -14,6 +14,10 @@ export function register(app) {
       res.status(400).json({ message: 'Invalid study slug or section id.' }); return
     }
 
+    if (!isStudyDiscussionOpen(studySlug)) {
+      res.json({ comments: [], closed: true, message: DISCUSSION_CLOSED_MESSAGE }); return
+    }
+
     const comments = state.studyComments
       .filter(c => c.studySlug === studySlug && c.sectionId === sectionId && c.isApproved === true)
       .sort((a, b) => new Date(a.createdAt) - new Date(b.createdAt))
@@ -44,6 +48,10 @@ export function register(app) {
       res.status(403).json({ message: 'Please enroll in this study to leave a comment.' }); return
     }
 
+    if (!isStudyDiscussionOpen(studySlug)) {
+      res.status(403).json({ message: DISCUSSION_CLOSED_MESSAGE, closed: true }); return
+    }
+
     const text = typeof req.body?.text === 'string' ? req.body.text.trim() : ''
     if (!text || text.length < 2 || text.length > MAX_STUDY_COMMENT_LENGTH) {
       res.status(400).json({ message: `Comment must be between 2 and ${MAX_STUDY_COMMENT_LENGTH} characters.` }); return
diff --git a/server/routes/study-data.js b/server/routes/study-data.js
index fd7cb27..8689d05 100644
--- a/server/routes/study-data.js
+++ b/server/routes/study-data.js
@@ -12,6 +12,8 @@ import {
   getCommunityDisplayName,
   getAccessibleStudySlugs,
   markStudyCompletedIfDone,
+  isStudyDiscussionOpen,
+  DISCUSSION_CLOSED_MESSAGE,
 } from '../study-helpers.js'
 import { state } from '../state.js'
 import {
@@ -368,6 +370,11 @@ export function register(app) {
       return
     }
 
+    if (!isStudyDiscussionOpen(studySlug)) {
+      res.json({ studySlug, posts: [], closed: true, message: DISCUSSION_CLOSED_MESSAGE })
+      return
+    }
+
     const posts = state.studyCommunityPosts
       .filter(post => post.studySlug === studySlug)
       .sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime())
@@ -413,6 +420,11 @@ export function register(app) {
       return
     }
 
+    if (!isStudyDiscussionOpen(studySlug)) {
+      res.status(403).json({ message: DISCUSSION_CLOSED_MESSAGE, closed: true })
+      return
+    }
+
     const now = new Date().toISOString()
     const authorName = getCommunityDisplayName(user)
     const post = {
@@ -455,6 +467,11 @@ export function register(app) {
       return
     }
 
+    if (!isStudyDiscussionOpen(post.studySlug)) {
+      res.status(403).json({ message: DISCUSSION_CLOSED_MESSAGE, closed: true })
+      return
+    }
+
     const reply = {
       id: randomUUID(),
       authorUserId: user.id,
@@ -480,6 +497,9 @@ export function register(app) {
     if (!hasStudyAccess(user, post.studySlug)) {
       res.status(403).json({ message: 'Please enroll in this study to like posts.' }); return
     }
+    if (!isStudyDiscussionOpen(post.studySlug)) {
+      res.status(403).json({ message: DISCUSSION_CLOSED_MESSAGE, closed: true }); return
+    }
     if (!Array.isArray(post.likedBy)) post.likedBy = []
     const idx = post.likedBy.indexOf(user.id)
     if (idx === -1) {
diff --git a/server/study-helpers.js b/server/study-helpers.js
index e1a4cc5..e685148 100644
--- a/server/study-helpers.js
+++ b/server/study-helpers.js
@@ -225,6 +225,18 @@ export async function backfillCompletedStudies() {
   return updated
 }
 
+// Discussion (community posts, replies, likes and lesson comments) is only open while a
+// study is active. Finished and planned studies are closed.
+export function isStudyDiscussionOpen(studySlug) {
+  const normalized = normalizeStudySlug(studySlug)
+  const studies = state.cachedSiteContent?.studies
+  if (!normalized || !Array.isArray(studies)) return false
+  const study = studies.find(item => normalizeStudySlug(item?.slug) === normalized)
+  return Boolean(study) && getEffectiveStudyStatus(study) === 'active'
+}
+
+export const DISCUSSION_CLOSED_MESSAGE = 'Discussion is only open while a study is active.'
+
 export function findStudyUserById(userId) {
   if (typeof userId !== 'string' || !userId.trim()) return undefined
   return state.studyUsers.find(user => user.id === userId)
diff --git a/src/studyPages.tsx b/src/studyPages.tsx
index 4431755..ad04070 100644
--- a/src/studyPages.tsx
+++ b/src/studyPages.tsx
@@ -212,6 +212,11 @@ function getEffectiveStudyStatus(study: StudyProgram): 'active' | 'planned' | 'c
   return 'active'
 }
 
+// Discussion (community board and lesson comments) is only open while a study is active.
+function isDiscussionOpen(study: StudyProgram | undefined): boolean {
+  return Boolean(study) && getEffectiveStudyStatus(study as StudyProgram) === 'active'
+}
+
 function getNextReleaseLabel(study: StudyProgram): string {
   const upcoming = study.sections
     .map(getSectionReleaseDate)
@@ -931,7 +936,7 @@ export function StudyLandingPage({ content }: Props) {
                         <div style={{ display: 'flex', gap: '0.5rem', flexWrap: 'wrap', marginTop: '1rem' }}>
                           <Link to={`/study/${study.slug}`} className="btn-primary">{study.completed ? 'Review Lessons' : 'Continue'}</Link>
                           <Link to={`/study/${study.slug}/notes`} className="btn-secondary">My Notes</Link>
-                          <Link to={`/study/${study.slug}/community`} className="btn-secondary">Community</Link>
+                          {isDiscussionOpen(studyMeta) && <Link to={`/study/${study.slug}/community`} className="btn-secondary">Community</Link>}
                           {study.completed && <Link to="/study/account" className="btn-secondary">🏅 Certificate</Link>}
                         </div>
                       </div>
@@ -1693,7 +1698,7 @@ export function ColossiansStudyIndexPage({ content }: Props) {
             )}
             {allLessonsDone && <Link to="/study/account" className="btn-secondary">🏅 My Certificate</Link>}
             {enrolled && <Link to={`/study/${study.slug}/notes`} className="btn-secondary">My Notes</Link>}
-            {enrolled && <Link to={`/study/${study.slug}/community`} className="btn-secondary">Community</Link>}
+            {enrolled && studyStatus === 'active' && <Link to={`/study/${study.slug}/community`} className="btn-secondary">Community</Link>}
             {auth.authenticated && <Link to="/study/account" className="btn-secondary">My Account</Link>}
           </div>
           {enrollMessage && <p className="study-note-status" style={{ marginTop: '0.75rem' }}>{enrollMessage}</p>}
@@ -1856,6 +1861,7 @@ export function ColossiansStudySectionPage({ content }: Props) {
   const currentStudySlug = study?.slug ?? 'colossians'
   const noteId = section?.id ? getNoteId(currentStudySlug, section.id) : ''
   const isEnrolled = isEnrolledInStudy(auth, currentStudySlug)
+  const discussionOpen = isDiscussionOpen(study)
   const lessonCompleted = section?.id ? completedSectionIds.includes(section.id) : false
 
   usePageMeta(
@@ -2371,7 +2377,7 @@ export function ColossiansStudySectionPage({ content }: Props) {
                 ))}
               </ol>
               <div style={{ marginTop: '1rem', display: 'flex', gap: '0.75rem', flexWrap: 'wrap' }}>
-                <Link to={`/study/${study.slug}/community`} className="btn-primary">Go to Community</Link>
+                {discussionOpen && <Link to={`/study/${study.slug}/community`} className="btn-primary">Go to Community</Link>}
                 <Link to={`/contact?source=community&study=${encodeURIComponent(study.title)}`} className="btn-secondary">Ask Nate</Link>
               </div>
             </article>
@@ -2480,14 +2486,14 @@ export function ColossiansStudySectionPage({ content }: Props) {
               )
             })()}
 
-            <article className="study-class-block">
+            {discussionOpen && <article className="study-class-block">
               <h2>Lesson Discussion</h2>
               <p className="study-detail-copy" style={{ fontSize: '0.88rem', color: '#7a7060', margin: '0 0 1rem' }}>
                 Share a thought or reaction with other students in this lesson.{' '}
                 <Link to={`/study/${study.slug}/community`} style={{ color: '#e0b840' }}>See all community posts →</Link>
               </p>
               <StudySectionComments studySlug={currentStudySlug} sectionId={section.id} isEnrolled={isEnrolled} />
-            </article>
+            </article>}
           </div>
 
           <aside className="study-classroom-sidebar" aria-label="Lesson tools">
@@ -2566,7 +2572,7 @@ export function ColossiansStudySectionPage({ content }: Props) {
             </article>
 
             {/* Community shortcut */}
-            {isEnrolled && (
+            {isEnrolled && discussionOpen && (
               <article className="study-class-side-block study-class-side-block--community">
                 <Link to={`/study/${study.slug}/community?sectionId=${section.id}`} className="study-community-shortcut">
                   <svg viewBox="0 0 24 24" aria-hidden="true" className="study-community-shortcut-icon"><path d="M20 2H4c-1.1 0-2 .9-2 2v18l4-4h14c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm0 14H5.17L4 17.17V4h16v12z" /></svg>
@@ -4169,6 +4175,7 @@ export function StudyDiscussionHubPage({ content }: Props) {
   }, [])
 
   usePageMeta('Study Discussion | Bible Study', 'Pick a study track and join the conversation with other students.')
+  const openDiscussionStudies = studies.filter(study => isDiscussionOpen(study))
 
   if (!auth.checked) {
     return (
@@ -4197,15 +4204,15 @@ export function StudyDiscussionHubPage({ content }: Props) {
         <div className="section-inner study-course-hero-inner">
           <p className="eyebrow">Student Community</p>
           <h1>Study Discussion</h1>
-          <p className="study-course-hero-copy">Pick a study track to see what other students are saying, ask questions, and share what God is teaching you.</p>
+          <p className="study-course-hero-copy">Pick an active study to see what other students are saying, ask questions, and share what God is teaching you. Discussion is open while a study is active.</p>
         </div>
       </section>
       <section className="section-inner" style={{ paddingTop: '1rem', paddingBottom: '4rem' }}>
-        {studies.length === 0 ? (
-          <p className="study-detail-copy">No study tracks are available yet.</p>
+        {openDiscussionStudies.length === 0 ? (
+          <p className="study-detail-copy">Discussion opens while a study is active. There are no active studies right now — check back when the next one starts.</p>
         ) : (
           <div className="study-module-list">
-            {studies.map(study => {
+            {openDiscussionStudies.map(study => {
               const enrolled = isEnrolledInStudy(auth, study.slug)
               return (
                 <article key={study.slug} className="study-module-row">
@@ -4281,6 +4288,24 @@ export function StudyCommunityPage({ content }: Props) {
     )
   }
 
+  if (!isDiscussionOpen(study)) {
+    return (
+      <main className="auth-page" aria-label="Discussion closed">
+        <div className="auth-shell auth-shell--single">
+          <div className="auth-card auth-card--center">
+            <p className="eyebrow">{study.title}</p>
+            <h1>Discussion Is Closed</h1>
+            <p>Discussion is only open while a study is active, and this study isn't active right now.</p>
+            <div className="study-signup-actions">
+              <Link to={`/study/${study.slug}`} className="btn-primary">Back to Study</Link>
+            </div>
+            <p className="auth-footer-links"><Link to="/study/discussion">← Study Discussion</Link></p>
+          </div>
+        </div>
+      </main>
+    )
+  }
+
   const isEnrolled = isEnrolledInStudy(auth, study.slug)
 
   return (
diff --git a/test/study-completion.test.js b/test/study-completion.test.js
index 3f88f54..c0c90ac 100644
--- a/test/study-completion.test.js
+++ b/test/study-completion.test.js
@@ -59,3 +59,22 @@ test('re-engagement emails skip students whose only study is finished', async ()
   await scheduleReengagementEmails(async (email) => { sent.push(email) })
   assert.deepEqual(sent, ['c@d.co'])
 })
+
+test('discussion is open only for active studies', async () => {
+  const { isStudyDiscussionOpen } = await import('../server/study-helpers.js')
+  const past = '2020-01-01T00:00:00Z'
+  const future = '2099-01-01T00:00:00Z'
+  state.cachedSiteContent = {
+    studies: [
+      { slug: 'live', status: 'active', sections: [{ id: 'a', releasedAt: past }, { id: 'b', releasedAt: future }] },
+      { slug: 'done', status: 'complete', sections: [{ id: 'a', releasedAt: past }] },
+      { slug: 'auto-done', sections: [{ id: 'a', releasedAt: past }] }, // every lesson released => complete
+      { slug: 'soon', status: 'planned', sections: [] },
+    ],
+  }
+  assert.equal(isStudyDiscussionOpen('live'), true)
+  assert.equal(isStudyDiscussionOpen('done'), false)
+  assert.equal(isStudyDiscussionOpen('auto-done'), false)
+  assert.equal(isStudyDiscussionOpen('soon'), false)
+  assert.equal(isStudyDiscussionOpen('missing'), false)
+})