Lesson
Click on the Schedule button and you will see the screen on the right. At the top left corner of the screen, you can see how many tickets you have to advance the Schedule and at the right you can see a list of Schools and their respective rank. When their total combined rank reaches 10, you will obtain +1 to your max ticket cap and when they total 25, you will recieve another +1 to your cap for a total of 5 tickets per day.
After clicking on a school, you will see a screen with icons of students and a bar at the top right. Selecting a icon from the ones shown will consume a ticket, increase affection with the shown students and other rewards that will be shown to you like books used for skilling up or shards of that student. The rank bar at the top right will also increase with every event you select in that particular school and new areas will be unlocked as you rank up.