Hi there,
You can use Adobe's Student Asset Migration portal to automatically transfer most of your creative assets from your assigned school account to a new personal account.
The procedure to migrate assets is simple. When you sign in to the Adobe Student Asset Migration portal, you must provide your consent to migrate your assets. If you do not provide consent, you will not be able to migrate your assets.
For detailed steps see: https://helpx.adobe.com/in/enterprise/admin-guide.html/enterprise/using/migrate-student-assets.ug.html (NOTE: Please read the complete document first and then begin the process of migration, this will help you know the dos and dont's beforehand)
However, if your school has stored your assets in encrypted form, you won't be able to transfer the assets to your personal account. In this case, you need to reach out to the Creative Cloud Admin of your school: https://helpx.adobe.com/in/enterprise/kb/contact-administrator.html
Hope this helps.