Q: I have recorded assessments for college on my ipad as videos but they are too large to send as attachments.

You'll need to sync them to your computer using iTunes. From there, you can transfer them to your external hard drive or memory stick.

https://support.apple.com/en-us/HT201302

I did a ten second video and it was 73meg.  An hour long video would be large.

I used, exif-wizard to find out the size.

https://itunes.apple.com/us/app/exif-wizard/id387652357?mt=8

Using iTunes to transfer files:

http://support.apple.com/kb/HT4094?viewlocale=en_US&locale=en_US

  chinajon provides an explanation on how to do file transfers

https://discussions.apple.com/message/30289293#30289293

"iMazing is the all purpose iOS management software: expand your control over your mobile data beyond what is normally possible, without jailbreaking your device. With iMazing, you can easily browse and manage your backups, extract and print your text messages, or drag and drop songs to your iPhone. To put it simply, iMazing allows you to go way beyond what iTunes offers"

https://imazing.com/

  Simple Transfer - Wireless Photo &  Video Backup, Sync & Share by Rambax, LLC

https://itunes.apple.com/us/app/simple-transfer-wireless-photo/id420821506?mt=8

"The kiteworks mobile file sharing solution provides secure creation, viewing, and sharing of enterprise content on smartphones and tablets while providing IT and security teams the administrative controls to manage user privileges and access rights necessary to ensure enterprise security and compliance."  " Includes choice of private cloud on-premise."

http://www.accellion.com/solutions/mobile-enablement/mobile-file-sharing

"Dukto is a simple application that allows you to share files between devices connected to the same (wireless) LAN network."

http://www.tidal.it/?page_id=309&lang=en

http://www.msec.it/blog/?page_id=11

"Transfer files the easy way, just drag & drop the file and we will handle the rest. Like Apple AirDrop, but works and on all major platforms and computers that don't support AirDrop. Apps are available for iOS, OS X, Windows, and Android."

https://itunes.apple.com/us/app/instashare-air-drop-transfer/id576220851?mt=8

You could look into Apple's airdrop. 

"To share content with AirDrop, both people need one of these devices using iOS 7 or later, or a Mac with OS X Yosemite"

Use AirDrop to wirelessly share content - Apple Support

You could try to share those videos through icloud photo sharing. Share it to an album, choose to make it a public website and share the link to the students. Or keep it private and only add those people you want as viewers. good luck.