diff --git a/utils/models/student.js b/utils/models/student.js
index 44984bb..b164e3b 100644
--- a/utils/models/student.js
+++ b/utils/models/student.js
@@ -1,8 +1,54 @@
 const { Sequelize, Op, Model, DataTypes } = require("sequelize");
+const { demap, map } = require("../api");
 const sequelize = require("../sequelize");
+const ssps = require("../ssps-server");
+const Group = require("./group");
 
-const Student = sequelize.define(
-    "student",
+class Student extends Model {
+    /** @type {string} */
+    id;
+    /** @type {string} */
+    name;
+    /** @type {string} */
+    classId;
+
+    async setClassID(classId) {
+        if(this.classId === classId) return;
+        this.classId = classId;
+        await this.save({ fields: "classId"});
+        const [groups, mainGroup] = await Promise.all([
+            this.getGroups(),
+            Group.findOne({
+                where: {
+                    abbrev: "celá",
+                    classId
+                }
+            })
+        ]);
+        await Promise.all([
+            this.removeGroups(groups), 
+            this.addGroup(mainGroup)
+        ]);
+    }
+
+    /**
+     * Updates discord class
+     */
+    async syncClass() {
+        const person = await this.getPerson();
+        if(!person || person.discord) return false;
+        const user = await global.client.users.fetch(person.discord);
+        const member = global.client.servers.resolve(ssps.server).member(user);
+        if(!member) return false;
+        await Promise.all([
+            member.roles.add(ssps.reverseRoles[map[classId]]),
+            member.roles.remove(Object.keys(ssps.roles).filter(t => t !== map[classId]))
+        ]);
+        return true;
+    }
+}
+
+Student.init(
     {
         id: {
             type: DataTypes.STRING(45),
@@ -14,6 +60,8 @@ const Student = sequelize.define(
             allowNull: false
         }
     }, {
+        sequelize,
+        modelName: "student",
         indexes: [{
             fields: ["personId"],
             type: "UNIQUE"