make-up classes

noun
UK /ˈmeɪkʌp ˈklɑːsɪz/
US /ˈmeɪkʌp ˈklæsɪz/

Extra classes you take to catch up on lessons you missed.

After being sick for a week, Mia had to attend make-up classes on Saturday.


OTHER MEANINGS

2. Classes scheduled to replace lessons canceled earlier.

The school arranged make-up classes after the snow days.

3. Additional sessions for students who failed or need more practice.

He joined make-up classes to improve his math grade.

4. Sessions held to cover material for students who were absent.

Make-up classes will be held next week for anyone who missed the lab.