You are downloading the School Timetable XAP file v126.96.36.199 for Windows Phone. School Timetable is a free and useful Education app: Uncluttered and easy to use school timetable with simple setup and live tile that shows the upcoming lesson. ... You can now download the offline XAP file to install & try it.
Download Locations for School Timetable 188.8.131.52 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline School Timetable XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.