By setting up GroupTweet, you and your students can all post onto one Twitter account without sharing the password for your page. This allows you to carry out many of the classroom ideas without ever signing up your students for their own Twitter account. Click on this link for directions on how to set this up.
https://grouptweet.com/blog/step-by-step-guide-to-managing-a-classroom-twitter-account-with-grouptweet