When teachers log in, any tiles that were created last year on their Skyward dashboard will default to show this year as well. If you click on a tile from last year, it will open the class from the previous school year change the school year in teacher access (red banner).
Teachers can clean up their Skyward home screen, by clicking the Select Class Tiles hyperlink. This will allow them to select the current year Attendance and Gradesheet tiles and will automatically remove any old tiles from last year.
Also, if teachers do not use tiles or if they are new, when they navigate to their Gradesheet or Attendance class selection screen, there is also an option to Show Current Classes or Show ALL Classes.
Classes do not become current until the 1st day of school.