The PowerSchool parent portal is an excellent way to record absences or download the SchoolMessenger App for your phone. The App is very effective at recording absences!
Please see links below for both Apple and Google Play
https://itunes.apple.com/us/app/schoolmessenger-infocenter/id978894818?mt=8
http://play.google.com/store/apps/details?id=com.schoolmessenger.recipient