a cram school or private tutoring school that offers extra lessons outside regular school, often for exam preparation.
子どもは放課後に学習塾へ通っている。
My child attends a cram school after classes.
学習塾で苦手な数学を克服した学生が多い。
Many students overcame their weak math skills at cram schools.
大学受験のため学習塾の模試を受けた。
I took a practice test at a cram school for university entrance exams.