To answer this question, I will take the meaning of the word "reinforcement" as the process of encouraging or establishing a pattern of behavior that is accompanied by reward/s.
(1) School - The reinforcement that is commonly done in school is to give credits to those who perform well through awards and recognition.
(2) Work - The reinforcement done at work is the promotion of the employees with accompaniment of higher salaries and benefits.
(3) Extracurricular activities - The reinforcement done in these activities is also the giving of awards and sense of self-fulfillment.
