The club thrived for the first few semesters and sent wrestlers to exhibitions competition at the international student sports tournament in Germany in 1929.

In the 1940s, the club hosted regular football matches with students from Menntaskólinn í Reykjavík, and in 1940 ÍS participated in the first Icelandic handball tournament.

There was talk of making sports a compulsory subject and that the school would nurture high-achieving athletes, as was the custom in American universities.

[11][12][13] In recent years, the activities have decreased and ÍS no longer sends teams to the Icelandic tournaments.

Úrvalsdeild karla[14] Icelandic Basketball Cup[15] Division I[16] Note: Flags indicate national team eligibility at FIBA-sanctioned events.