In addition to Ski IL, 113 other teams from 21 different countries played in Boys 15. They were divided into 19 different groups, whereof Ski IL could be found in Group 12 together with Kolding IF 2, TSG Münster, HBC Conflans 2, Åkersberga HK and HK Bollebygd. Ski IL continued to A-Play-off after reaching 1:st place in Group 12. In the playoff they made it to 1/32 Final, but lost it against Da-Jia Junior High School with 15-16. In the Final, Hörning Håndbold won over Hjortshöj Egå IF and became the winner of A-Play-off in Boys 15. Ski IL also participated in Boys 14 during Partille Cup 2018. They reached the final in B-Play-off, but lost it against Täby HBK 1 with 11-15 and ended up in second place.