Generally, they are internships in senior three (teachers are generally internships in senior three, but the school will make unified arrangements). During this period, the school generally does not arrange courses, so we should make good use of them, practice and prepare for various exams, such as civil service exams and studying abroad. The internship period is generally three to six months. If you are good, you can try to become a full member.

College students' internship:

College students' internship means that college students enter government agencies, enterprises, institutions, social organizations and other employers for teaching practice and production practice, so as to carry out practical teaching and cultivate students' engineering practice ability and innovative spirit, including engineering training centers, professional training centers, professional training bases, practice bases and other internships inside and outside the school.

Refer to the above? Baidu encyclopedia-college students' internship