noun
nursery school teacher; childcare worker
A qualified professional who cares for and educates young children at a nursery school or daycare center. The term is often used in official contexts.
彼女は保育士として10年働いています。
She has been working as a nursery school teacher for ten years.
保育士になるには国家資格が必要です。
You need a national qualification to become a childcare worker.
ベビーシッター is a babysitter, often a part-time or informal caregiver, while 保育士 is a licensed professional.
Compound of 保育 (childcare) and 士 (professional, person with qualifications).