Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A kollel (: , pl. , kollelim, a "gathering" or "collection" [of scholars]) is an institute for full-time, advanced of the and . Like a , a kollel features (lectures) and learning sedarim (learning sessions); unlike a yeshiva, the student body of a kollel are all married men. Kollels generally pay a regular monthly stipend to their members. Beginning in the last third of the 20th century, the kollel concept expanded with the introduction of community kollels. Community kollels are a (Jewish outreach) tool which aims to increase Jewish knowledge and identity as a hedge against assimilation. Community kollels are typically composed of a of students who engage in advanced Torah study with their own rabbis and shiurim for part of the day, and then conduct one-on-one learning sessions, free classes, and holiday activities for the Jewish community at large during the other part of the day.