the standards package is a collection of past works and exams for each subject, with examples from band 1, band 2, band 3 etc - so for Extension 2 the standards package contains about 70 past major works across all the different mediums... its really helpful because they include stuff reflection statements as well.
i think all schools have them - its just a matter of hounding them enough so they get off their asses and show them to students (our were buried in the back of the library for a year and a half until our class hassled them enough)