Related Clues:

• A student on grass? The other way round, but that's unofficial!
• Where pupils get together a learner's relaxed
• Casual, as dress
• Brief a student -- it's not official
• Cosy — loose
• Relaxed and casual
• Easy setter — female — in run-of-the-mill setting
• In class a student becomes familiar
• Relaxed, popular class for a student
• Relaxed, fill in a line
• Relaxed and unofficial
• Relaxed boy attending class first
• Playing well, half-naked and relaxed
• Unofficial instruction to tell a student what is going on
• Casual; unofficial