She's applying for a job that requires a teaching qualification.

qualification 是名词，来自动词 qualify（使具备资格）。这个词由词根 qual（质量、品质）和后缀 -ification（表示"使成为..."的过程）组成，意思是"资格证明"或"资质"。 teaching qualification 特指"教学资格证书"，证明持有人具备从事教学工作的专业资质。