Well, how fair was it that Harry's parents got to know?! Well, as far as Neville was concerned, it wasn't fair at all. Since all these other people knew, he didn't see what the problem would be in telling his parents that he was...who he was. Pondering that, he leaned back in his seat, mumbling to himself.
"I could leave them a note...or send an owl..." Ignoring everyone around him, he continued to think about how he could tell them. If there was any one thing that he could change, it would be how his parents turned out. If by telling them what happened he could protect them, it might be worth it.
Neville knew that he couldn't really tell anyone else of his plans. But well, it was worth a shot, right?