You can submit contact information changes through the SchoolTool website portal (not the mobile app).
SUBMITTING AN INFORMATION CHANGE REQUEST
Login to the SchoolTool Parent Portal
If you need to change your password, information can be found here: LINK
Once you log in, you must click on one of your students. When you are in the student's record, in the upper right corner, you will see a small icon like this: 
Click on that icon to begin the change information request process.
More detailed instructions can be found at this LINK
You may also contact our registrar at (585) 248-6306 or [email protected] in order to update or change contact information.