He finished his Bachelor and Master degrees in TESOL from IFL. Currently, Kosal is a part-time professor at PUC, teaching Strategies for Oral Communication to senior students and a freelance public speaking trainer and coach. He has been a member of Toastmasters International for over 6 years. Kosal has been conducting various trainings and workshops for some organizations and events such as JCI Mekong, USAID Cambodia, CKCC, ITC, Ignite Phnom Penh, Spark.Phnom Penh and The Desk Coworking Space. Kosal was an Ignite Phnom Penh speaker in 2016 and also a TEDx AbdulCarimeSt speaker in 2018.