“Kwikspell is an all-new, fail-safe, quick-result, easy-learn course. Hundreds of witches and wizards have benefited from the Kwikspell method!” -- CS8
Publishers of both the Kwikspell course, remedial training for poor-performing witches and wizards (CS8), and the Wallop the Wombat Revision Course for those who fail the 3rd WOMBAT test (JKR). This company specializes in courses for magical ability improvement.
"Kwik" is a Dutch spelling of the English word, "quick." This implies that "Kwikspell" means "Quickspell" as in a way to learn spells (magic) quickly.