getReadabilityGradeLevel = (score) ->
  return '5th grade (Very easy)' if score >= 90
  return '6th grade (Easy)' if score >= 80
  return '7th grade (Fairly easy)' if score >= 70
  return '8th & 9th grade (Plain English)' if score >= 60
  return '10th to 12th grade (Fairly difficult)' if score >= 50
  return 'College (Difficult)' if score >= 30
  return 'College graduate (Very difficult)' if score >= 10
  return 'Professional (Extremely difficult)' 
  
getReadabilityGradeLevel(score)