diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectItem.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectItem.kt
index fa21cff94..967e762e8 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectItem.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectItem.kt
@@ -2,6 +2,8 @@ package io.github.wulkanowy.ui.modules.login.studentselect
 
 import android.annotation.SuppressLint
 import android.view.View
+import android.view.View.GONE
+import android.view.View.VISIBLE
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
 import eu.davidea.flexibleadapter.items.IFlexible
@@ -10,12 +12,16 @@ import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
 import kotlinx.android.extensions.LayoutContainer
 import kotlinx.android.synthetic.main.item_login_student_select.*
+import timber.log.Timber
 
-class LoginStudentSelectItem(val student: Student) : AbstractFlexibleItem<LoginStudentSelectItem.ItemViewHolder>() {
+class LoginStudentSelectItem(val student: Student, val alreadySaved: Boolean) :
+    AbstractFlexibleItem<LoginStudentSelectItem.ItemViewHolder>() {
 
     override fun getLayoutRes() = R.layout.item_login_student_select
 
     override fun createViewHolder(view: View, adapter: FlexibleAdapter<IFlexible<*>>): ItemViewHolder {
+        Timber.i("createViewHolder()")
+        Timber.i(alreadySaved.toString())
         return ItemViewHolder(view, adapter)
     }
 
@@ -24,6 +30,10 @@ class LoginStudentSelectItem(val student: Student) : AbstractFlexibleItem<LoginS
         holder.apply {
             loginItemName.text = "${student.studentName} ${student.className}"
             loginItemSchool.text = student.schoolName
+            loginItemName.isEnabled = !alreadySaved
+            loginItemSchool.isEnabled = !alreadySaved
+            loginItemCheck.isEnabled = !alreadySaved
+            loginItemSignedIn.visibility = if (alreadySaved) VISIBLE else GONE
         }
     }
 
@@ -34,6 +44,7 @@ class LoginStudentSelectItem(val student: Student) : AbstractFlexibleItem<LoginS
         other as LoginStudentSelectItem
 
         if (student != other.student) return false
+        if (alreadySaved != other.alreadySaved) return false
 
         return true
     }
@@ -42,7 +53,8 @@ class LoginStudentSelectItem(val student: Student) : AbstractFlexibleItem<LoginS
         return student.hashCode()
     }
 
-    class ItemViewHolder(view: View, adapter: FlexibleAdapter<*>) : FlexibleViewHolder(view, adapter), LayoutContainer {
+    class ItemViewHolder(view: View, val adapter: FlexibleAdapter<*>) :
+        FlexibleViewHolder(view, adapter), LayoutContainer {
 
         override val containerView: View
             get() = itemView
@@ -53,7 +65,10 @@ class LoginStudentSelectItem(val student: Student) : AbstractFlexibleItem<LoginS
 
         override fun onClick(view: View?) {
             super.onClick(view)
-            loginItemCheck.apply { isChecked = !isChecked }
+
+            if (loginItemCheck.isEnabled) {
+                loginItemCheck.apply { isChecked = !isChecked }
+            }
         }
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt
index 841c225d7..87acebf1e 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt
@@ -8,6 +8,7 @@ import io.github.wulkanowy.ui.modules.login.LoginErrorHandler
 import io.github.wulkanowy.utils.FirebaseAnalyticsHelper
 import io.github.wulkanowy.utils.SchedulersProvider
 import io.github.wulkanowy.utils.ifNullOrBlank
+import io.reactivex.Single
 import timber.log.Timber
 import java.io.Serializable
 import javax.inject.Inject
@@ -50,7 +51,7 @@ class LoginStudentSelectPresenter @Inject constructor(
     }
 
     fun onItemSelected(item: AbstractFlexibleItem<*>?) {
-        if (item is LoginStudentSelectItem) {
+        if (item is LoginStudentSelectItem && !item.alreadySaved) {
             selectedStudents.removeAll { it == item.student }
                 .let { if (!it) selectedStudents.add(item.student) }
 
@@ -58,11 +59,33 @@ class LoginStudentSelectPresenter @Inject constructor(
         }
     }
 
+    private fun compareStudents(a: Student, b: Student): Boolean {
+        return a.email == b.email
+            && a.symbol == b.symbol
+            && a.studentId == b.studentId
+            && a.schoolSymbol == b.schoolSymbol
+            && a.classId == b.classId
+    }
+
     private fun loadData(students: List<Student>) {
         this.students = students
-        view?.apply {
-            updateData(students.map { LoginStudentSelectItem(it) })
-        }
+        disposable.add(studentRepository.getSavedStudents()
+            .map { savedStudents ->
+                students.map { student ->
+                    Pair(student, savedStudents.any { compareStudents(student, it) })
+                }
+            }
+            .subscribeOn(schedulers.backgroundThread)
+            .observeOn(schedulers.mainThread)
+            .subscribe({
+                view?.updateData(it.map { studentPair ->
+                    LoginStudentSelectItem(studentPair.first, studentPair.second)
+                })
+            }, {
+                errorHandler.dispatch(it)
+                view?.updateData(students.map { student -> LoginStudentSelectItem(student, false) })
+            })
+        )
     }
 
     private fun registerStudents(students: List<Student>) {
diff --git a/app/src/main/res/layout/item_login_student_select.xml b/app/src/main/res/layout/item_login_student_select.xml
index 254bff60f..941159eb1 100644
--- a/app/src/main/res/layout/item_login_student_select.xml
+++ b/app/src/main/res/layout/item_login_student_select.xml
@@ -2,8 +2,11 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/loginItemContainer"
     android:layout_width="match_parent"
-    android:layout_height="72dp"
-    android:background="?selectableItemBackground">
+    android:layout_height="wrap_content"
+    android:minHeight="72dp"
+    android:background="?selectableItemBackground"
+    android:paddingBottom="8dp"
+    android:paddingTop="8dp">
 
     <com.google.android.material.checkbox.MaterialCheckBox
         android:id="@+id/loginItemCheck"
@@ -11,16 +14,16 @@
         android:layout_height="24dp"
         android:layout_marginStart="12dp"
         android:layout_marginLeft="12dp"
-        android:layout_marginTop="24dp"
         android:layout_marginEnd="28dp"
         android:layout_marginRight="28dp"
         android:background="@android:color/transparent"
+        android:layout_centerVertical="true"
         tools:text=" " />
 
     <TextView
         android:id="@+id/loginItemName"
         android:layout_width="wrap_content"
-        android:layout_height="32dp"
+        android:layout_height="wrap_content"
         android:layout_marginEnd="16dp"
         android:layout_marginRight="16dp"
         android:layout_toEndOf="@id/loginItemCheck"
@@ -34,7 +37,7 @@
     <TextView
         android:id="@+id/loginItemSchool"
         android:layout_width="wrap_content"
-        android:layout_height="20dp"
+        android:layout_height="wrap_content"
         android:layout_below="@id/loginItemName"
         android:layout_marginEnd="16dp"
         android:layout_marginRight="16dp"
@@ -42,8 +45,27 @@
         android:layout_toRightOf="@id/loginItemCheck"
         android:ellipsize="end"
         android:gravity="bottom"
+        android:maxLines="2"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="14sp"
+        tools:text="@tools:sample/lorem/random" />
+
+    <TextView
+        android:id="@+id/loginItemSignedIn"
+        android:layout_width="wrap_content"
+        android:layout_height="20dp"
+        android:layout_below="@id/loginItemSchool"
+        android:layout_marginEnd="16dp"
+        android:layout_marginRight="16dp"
+        android:layout_toEndOf="@id/loginItemCheck"
+        android:layout_toRightOf="@id/loginItemCheck"
+        android:ellipsize="end"
+        android:gravity="bottom"
         android:maxLines="1"
         android:textColor="?android:textColorSecondary"
         android:textSize="14sp"
-        tools:text="@tools:sample/lorem/random" />
+        android:text="@string/login_signed_in"
+        android:enabled="false"
+        android:visibility="gone"
+        tools:visibility="visible" />
 </RelativeLayout>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 9ebaf8313..2ba2975e4 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -52,6 +52,7 @@
     <string name="login_contact_email">Email</string>
     <string name="login_contact_discord">Discord</string>
     <string name="login_email_intent_title">Wyślij email</string>
+    <string name="login_signed_in">Uczeń jest już zalogowany</string>
 
 
     <!--Main-->
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 736d5fd63..7777bdc6a 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -53,6 +53,7 @@
     <string name="login_contact_email">Электронная почта</string>
     <string name="login_contact_discord">Discord</string>
     <string name="login_email_intent_title">Отправить письмо</string>
+    <string name="login_signed_in">Студент уже вошел в систему</string>
 
 
     <!--Main-->
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 2c896624a..237384896 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -54,6 +54,7 @@
     <string name="login_email_intent_title">Send email</string>
     <string name="login_email_subject" translatable="false">Zgłoszenie: Problemy z logowaniem</string>
     <string name="login_email_text" translatable="false">Informacje o aplikacji:\n\nUrządzenie: %1$s\nWersja SDK: %2$s\nWersja aplikacji: %3$s\n\nOpis problemu:</string>
+    <string name="login_signed_in">Student is already signed in</string>
 
 
     <!--Main-->
diff --git a/app/src/test/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenterTest.kt b/app/src/test/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenterTest.kt
index 2c174fb58..90df9317c 100644
--- a/app/src/test/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenterTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenterTest.kt
@@ -53,7 +53,7 @@ class LoginStudentSelectPresenterTest {
     fun onSelectedStudentTest() {
         doReturn(Single.just(listOf(1L))).`when`(studentRepository).saveStudents(listOf(testStudent))
         doReturn(Completable.complete()).`when`(studentRepository).switchStudent(testStudent)
-        presenter.onItemSelected(LoginStudentSelectItem(testStudent))
+        presenter.onItemSelected(LoginStudentSelectItem(testStudent, false))
         presenter.onSignIn()
         verify(loginStudentSelectView).showContent(false)
         verify(loginStudentSelectView).showProgress(true)
@@ -64,7 +64,7 @@ class LoginStudentSelectPresenterTest {
     fun onSelectedStudentErrorTest() {
         doReturn(Single.error<Student>(testException)).`when`(studentRepository).saveStudents(listOf(testStudent))
         doReturn(Completable.complete()).`when`(studentRepository).logoutStudent(testStudent)
-        presenter.onItemSelected(LoginStudentSelectItem(testStudent))
+        presenter.onItemSelected(LoginStudentSelectItem(testStudent, false))
         presenter.onSignIn()
         verify(loginStudentSelectView).showContent(false)
         verify(loginStudentSelectView).showProgress(true)