Here is a screenshot I captured from the anime Tantei Gakuen Q. I'll let you guess what Q is.
What? Don't know? Come on... Still no idea? Sigh. Q stands for Quarified! *disappointing look* It represents a group of students from class Q who'll take over this man's (pic) position one day. Oops spoiler, whoever that plans to watch this anime.
So this is how the Japanese spell qualified. There's something called the dictionary, ya know. You should at least check it out before you spell it out to the whole world what Q is.