Deleted a model manually, php artisan migrate gives and error

So I just started playing around with Laravel 5.1. I created a model with migration named "teachers". Then I manually deleted the model file which was Teachers.php which contained the Teachers class. Now when I try to roll back I get the following error:

[Symfony\Component\Debug\Exception\FatalErrorException]  
  Class 'CreateTeachersTable' not found

I tried composer dump-autoload and php artisan migrate:refresh and php artisan migrate:reset but it keeps on giving above error. I just want to start afresh. How to reset everything?

via Chebli Mohamed