```ruby
FactoryGirl.define do
  factory :course_level, class: Course::Level.name do
    course
    sequence(:experience_points_threshold)
  end
end
```

Make levels factory more realistic
user
```ruby
FactoryGirl.define do
  factory :course_level, class: Course::Level.name do
    course
    sequence(:experience_points_threshold) { |n| n * 100 }
  end
end
```
assistant