School cooperatives are cooperatives established in a school environment whose members consist of school students. School cooperatives can be established at various levels according to education levels, for example elementary school cooperatives, junior high school cooperatives, and so on. The establishment of school cooperatives among students aims to support student education and cooperative training. Thus, the purpose of its formation is inseparable from the goals of education and government programs in instilling awareness of cooperatives from an early age.

SMAN15 Surabaya commonly known as libels.Libels also has its own cooperative which is commonly called "kobasis" by the peoples of libels. The cooperative sells a variety of needs of peoples of libels ranging from students to teachers, such as stationery, snacks and food, ice cream, drinks, and much more and the price is also relative and looting is a term use to buy snack on kobasis. Cooperative libels usually also hold promos for items there. and items that are often bought by students are tahu bakso, because they taste good and affordable. the libels cooperative has a comfortable place, there are chairs for us to sit when we are queuing and the room is cold, and the service is also very nice and friendly.

According to the agung of one buyer, he was greatly helped by the kobasis, since he did not need to exchange his money for a coupon.He thinks that food in the canteen costs as much as the food in the canteen.And there was one meal that he thought was really good and was only available on the kobasis of tahu bakso.

The existence of a school cooperative is very helpful for the people in the school to buy their needs, such as buying stationery, snacks, etc. and benefits all parties concerned, be it buyers or members of the cooperative.