What does "first class" mean in English for Spanish?

In English for Spanish, "first class" means:

primera clase

Listen to "first class": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 3, Scene 6
• English for Spanish 3, Level 3, Scene 7
• English for Spanish 3, Level 3, Scene 8