Read the following text aloud.

Ardi and Raina are students of an athletics school. They start their day very early in the morning. At 5 a.m., they have physical exercises. The exercises are often very hard and tiring. They sometimes scream or cry, but they do not stop doing the exercises. They know that they must work very hard to be good athletes. School begins at 8 a.m. and finishes at 12 p.m. Then they usually rest for three hours before they have technique building exercises at 3 p.m. The students of the school do not watch TV a lot. They never hang out at malls with their friends in the evening because they still have night classes. On Mondays, Wednesdays, and Fridays, they have night classes from 7 p.m. until 9:30 p.m. They are usually very tired and go to bed right after that.

For how long do the students of the athletics school have classes in the morning?