diff --git a/app/Models/Admin.php b/app/Models/Admin.php
new file mode 100644
index 0000000..7d76602
--- /dev/null
+++ b/app/Models/Admin.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Admin extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'name',
+        'last_name',
+        'middle_name',
+    ];
+}
diff --git a/app/Models/Grade.php b/app/Models/Grade.php
index d5fbe16..04d734e 100644
--- a/app/Models/Grade.php
+++ b/app/Models/Grade.php
@@ -6,6 +6,7 @@ use Illuminate\Contracts\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class Grade extends Model
 {
@@ -20,6 +21,16 @@ class Grade extends Model
         return $this->belongsToMany(Subject::class);
     }
 
+    public function students(): HasMany
+    {
+        return $this->hasMany(Student::class);
+    }
+
+    public function teachers(): BelongsToMany
+    {
+        return $this->belongsToMany(Teacher::class);
+    }
+
     public function scopeFilter(Builder $query): void
     {
         $name = request('name');
diff --git a/app/Models/Student.php b/app/Models/Student.php
new file mode 100644
index 0000000..28efe00
--- /dev/null
+++ b/app/Models/Student.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Student extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'name',
+        'last_name',
+        'middle_name',
+        'birthday',
+    ];
+
+    public function grade(): BelongsTo
+    {
+        return $this->belongsTo(Grade::class);
+    }
+}
diff --git a/app/Models/Subject.php b/app/Models/Subject.php
index 5126923..7cc7d1d 100644
--- a/app/Models/Subject.php
+++ b/app/Models/Subject.php
@@ -20,6 +20,11 @@ class Subject extends Model
         return $this->belongsToMany(Grade::class);
     }
 
+    public function teachers(): BelongsToMany
+    {
+        return $this->belongsToMany(Teacher::class);
+    }
+
     public function scopeFilter(Builder $query): void
     {
         $name = request('name');
diff --git a/app/Models/Teacher.php b/app/Models/Teacher.php
new file mode 100644
index 0000000..2a6ea4e
--- /dev/null
+++ b/app/Models/Teacher.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+
+class Teacher extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'name',
+        'last_name',
+        'middle_name',
+        'birthday',
+    ];
+
+    public function subjects(): BelongsToMany
+    {
+        return $this->belongsToMany(Subject::class);
+    }
+
+    public function grades(): BelongsToMany
+    {
+        return $this->belongsToMany(Grade::class);
+    }
+}
diff --git a/app/Models/User.php b/app/Models/User.php
index def621f..407a732 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -17,7 +17,6 @@ class User extends Authenticatable
      * @var array<int, string>
      */
     protected $fillable = [
-        'name',
         'email',
         'password',
     ];
diff --git a/database/migrations/0001_01_01_000000_create_users_table.php b/database/migrations/0001_01_01_000000_create_users_table.php
index 05fb5d9..d8d8ede 100644
--- a/database/migrations/0001_01_01_000000_create_users_table.php
+++ b/database/migrations/0001_01_01_000000_create_users_table.php
@@ -13,7 +13,6 @@ return new class extends Migration
     {
         Schema::create('users', function (Blueprint $table) {
             $table->id();
-            $table->string('name');
             $table->string('email')->unique();
             $table->timestamp('email_verified_at')->nullable();
             $table->string('password');
diff --git a/database/migrations/2024_04_17_062223_create_teachers_table.php b/database/migrations/2024_04_17_062223_create_teachers_table.php
new file mode 100644
index 0000000..1b2f14c
--- /dev/null
+++ b/database/migrations/2024_04_17_062223_create_teachers_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('teachers', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('last_name');
+            $table->string('middle_name')->nullable();
+            $table->date('birthday');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('teachers');
+    }
+};
diff --git a/database/migrations/2024_04_17_062332_create_students_table.php b/database/migrations/2024_04_17_062332_create_students_table.php
new file mode 100644
index 0000000..6be03e1
--- /dev/null
+++ b/database/migrations/2024_04_17_062332_create_students_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('students', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('last_name');
+            $table->string('middle_name')->nullable();
+            $table->date('birthday');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('students');
+    }
+};
diff --git a/database/migrations/2024_04_17_062412_create_admins_table.php b/database/migrations/2024_04_17_062412_create_admins_table.php
new file mode 100644
index 0000000..fa97368
--- /dev/null
+++ b/database/migrations/2024_04_17_062412_create_admins_table.php
@@ -0,0 +1,27 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('admins', function (Blueprint $table) {
+            $table->id();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('admins');
+    }
+};
diff --git a/database/migrations/2024_04_17_064554_add_foreign_key_to_users.php b/database/migrations/2024_04_17_064554_add_foreign_key_to_users.php
new file mode 100644
index 0000000..758992c
--- /dev/null
+++ b/database/migrations/2024_04_17_064554_add_foreign_key_to_users.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->foreignId('grade_id')->constrained('grades');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('grade_id');
+        });
+    }
+};
diff --git a/database/migrations/2024_04_17_071019_create_subject_teacher_table.php b/database/migrations/2024_04_17_071019_create_subject_teacher_table.php
new file mode 100644
index 0000000..76f814c
--- /dev/null
+++ b/database/migrations/2024_04_17_071019_create_subject_teacher_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('subject_teacher', function (Blueprint $table) {
+            $table->foreignId('subject_id')->constrained('subjects')->onDelete('cascade');
+            $table->foreignId('teacher_id')->constrained('teachers')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('subject_teacher');
+    }
+};
diff --git a/database/migrations/2024_04_17_071104_create_grade_teacher_table.php b/database/migrations/2024_04_17_071104_create_grade_teacher_table.php
new file mode 100644
index 0000000..a7994a0
--- /dev/null
+++ b/database/migrations/2024_04_17_071104_create_grade_teacher_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('grade_teacher', function (Blueprint $table) {
+            $table->foreignId('grade_id')->constrained('grades')->onDelete('cascade');
+            $table->foreignId('teacher_id')->constrained('teachers')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('grade_teacher');
+    }
+};