IDNStudy.com, kung saan ang iyong mga tanong ay natutugunan ng mga eksperto. Magtanong at makakuha ng detalyadong sagot mula sa aming komunidad ng mga eksperto na may kaalaman.
Its mission has been achieved.
The noun "School" is replaced by the possessive pronoun "its." It indicates that the mission is school's, not others.
\tt{NOTE:}NOTE: Do not mistake "its" and "it's." The two are not the same. "Its" is a possessive pronoun while "it's" is a shortcut for it is. Possessive pronouns are not written with apostrophes ('
(answer not mine)