Do I need to tell I am part time student?

I am writing the letter to consult to invite my parents attend the graduate Commencement, do I need to tell I am parttime student since I want to provide my paycheck stub.

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what's your visa type?

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I am GC holder.

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then it does not matter bah

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thanks.. I am trying to put more info in this short letter, in order to let him/her ask less questions to my parents.