What is the main function of an official transcript in high school?

Certify academic records.

Explanation:

An official transcript is official document, certified for the school that you achieved those academic records that you showed. That's the main function, certify academic records in order to prove your notes are right and not copied or cheated.

In 1947, after the vice presidency had been vacant for most of a presidential term, Congress again changed the line of succession. ... The amendment states that the president may appoint a vice president to fill a vacancy in that office, subject to approval by both houses of Congress.