You are downloading the School Mark Diary Manager XAP file v18.104.22.168 for Windows Phone. School Mark Diary Manager is a free and useful Education app: "School Mark Diary Manager" is a Free app to document and track your school grades and calculate your mean marks for each subject."School ... You can now download the offline XAP file to install & try it.
Download Locations for School Mark Diary Manager 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline School Mark Diary Manager XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.