Student or Learner
Why don't we consider the articles as parts of speech?
***** NOT A TEACHER *****
Hello, White Rose:
Traditionally, most grammar books have identified 8 parts of speech: noun, pronoun, adjective, verb, adverb, conjunction, preposition, and interjection.
Those books feel that the most appropriate classification for a, an, and the is adjective.
I believe that in newer grammar books, the term "determiner" is preferred.
There are various views of what the parts of speech are in English, and many consider articles to be one, or a subset of determiners, so it is not correct to think that no one considers them to be a part of speech.