Here's why:
* Verification of Authenticity: Directly sending transcripts ensures the college receives an official, verifiable document. A student-submitted transcript could be easily altered or forged. The official seal and signature from the high school registrar are crucial.
* College Requirements: Many colleges *require* transcripts to be sent directly. This is explicitly stated in their application requirements. Failing to comply might delay your application or lead to rejection.
* Security: Direct transmission from the high school often uses secure methods, minimizing the risk of the transcript being lost or intercepted.
While a student *might* be able to submit a copy, it will almost certainly be considered unofficial and will not fulfill the college's requirements for official documentation. Always check the specific instructions and requirements of each college you are applying to. Their website should clearly state their preferred (and often mandated) method of transcript submission.