Una-sana college as a host for math canton competition for secondary school, 2015 SCIENCE WEEK CHEMISTRY PERIODIC CUP CAKES APRIL 2015 SCIENCE WEEK CHEMISTRY POSTER,PROJECT COMPETITION APRIL 2015 SCIENCE WEEK CHEMISTRY SHORT MOVIE APRIL 2015 SCIENCE WEEK PHYSICS ACTIVITIES, 2015 BIOLOGY LAB WORK,2015 Kantonalno takmičenje učenika srednjih škola iz Biologije, 2015 „Volim BiH“ 2015 Datumi Maturskih ispita i radova maj 2015 BMO 2015, Athens, Greece