Here's why:
* Subject Pronoun Order: In a compound subject (two or more subjects joined by "and"), the pronoun "I" usually comes last. However, when referring to yourself and others, it's more polite to put "me" last.
* Object Pronoun Usage: When the pronoun is the object of the sentence or preposition, "me" is the correct form.
Example:
* Incorrect: My classmates and I went to the park.
* Correct: My classmates and me went to the park.
Let me know if you have any other grammar questions!