diff --git a/plugins/nodebb-plugin-qa-students-filter/library.js b/plugins/nodebb-plugin-qa-students-filter/library.js
new file mode 100644
index 0000000000..2ead0fea61
--- /dev/null
+++ b/plugins/nodebb-plugin-qa-students-filter/library.js
@@ -0,0 +1,16 @@
+const db = require('../database');
+const { getChildrenCids } = require('../../src/categories');
+const user = require('../user')
+const  plugin = {};
+
+plugin.filterSubjectsByTrimester = async (cids, uid) => {
+
+    const filteredCategories = [];
+
+    for(const cid in cids){
+        const allChildCids = await categories.getAllCidsFromSet("cid:${cid}:children");
+        filteredCategories.concat(allChildCids);
+    }
+    
+    return filteredCategories;
+}
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diff --git a/plugins/nodebb-plugin-qa-students-filter/packages.json b/plugins/nodebb-plugin-qa-students-filter/packages.json
new file mode 100644
index 0000000000..212407edec
--- /dev/null
+++ b/plugins/nodebb-plugin-qa-students-filter/packages.json
@@ -0,0 +1,17 @@
+{
+    "name": "nodebb-plugin-qa-students-filter",
+    "version": "1.0.0",
+    "description": " students filter plugin to Q&A for NodeBB",
+    "main": "library.js",
+    "keywords": [
+      "nodebb",
+      "plugin",
+      "questions",
+      "answers"
+    ],
+    "license": "MIT",
+    "nbbpm": {
+      "compatibility": "^3.0.0"
+    }
+  }
+  
\ No newline at end of file
diff --git a/plugins/nodebb-plugin-qa-students-filter/plugin.json b/plugins/nodebb-plugin-qa-students-filter/plugin.json
new file mode 100644
index 0000000000..25a087a0b2
--- /dev/null
+++ b/plugins/nodebb-plugin-qa-students-filter/plugin.json
@@ -0,0 +1,10 @@
+{
+	"id": "nodebb-plugin-qa-students-filter",
+    "library": "./library.js",
+	"hooks": [
+		{
+			"hook": "filter:trimester.filter",
+			"method": "filterSubjectsByTrimester"
+		}
+	]
+}
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