Right. The principal called in several pupils, Jack and Mary and me.
Revise. For whom did you ask—they and she?
305. After the conjunctions as and than, put the pronoun into the same case as that of the noun or pronoun with which the comparison is made. (Exception: The form whom is usually used after than.)
Wrong. He swims better than me.
Right. He swims better than I.
Wrong. She is as rich as him.
Right. She is as rich as he.
Wrong. It improved him more than I.
Right. It improved him more than me.