Valentin was about to point out that there weren't any leprechauns at the school, but then he realized he had no idea whether that was true or not. There were fairies, and leprechauns were at least fairy-adjacent. Maybe leprechauns were a subtype of fairies. Like you had fairies, but they consisted of fae, 'chauns, pixies and whatnot.
He'd have to ask Mr. Cavanaugh.
Valentin grinned at Travis. "What're you going to use your good luck for?"