User.php

<?php

// model student
class Student extends Model
{
}

// user oberserver
class UserObserver
{
  public function saved(user)
	{
		  Student::create([
        'name' => $user->name,
        'email' => $user->email
      ]);
	} 
}

// model user
class User extends Model
{
  public static function boot()
  {
      parent::boot();
      self::observe(new UserObserver());
  }
}