I passed the ISEF-K! February 7, 2018 Heejun Lee KOI - 2017, Life in Korea I passed ISEF-K by the 1st place! So now I can go ISEF — it will be held on Pittsburg this year –. FINALLY. I’ve tried this for 2 years… and now I passed! Heejun Lee Hi Everyone! I think we need more active people in CODEX! Everybody, enjoy my codex, and comment!