Informally referred to by its acronym "CH", it is a private, non-sectarian, educational institution located in City Heights, 5 kilometers south of Bacolod, the capital of Negros Occidental province and Victorias City, 34 kilometers north of Bacolod in the Philippines.

Castleson High was founded by Cecilia del Castillo-Lopez as a high school in 1995 wherein 16 students (fifteen boys and one girl) in Homesite under Rhazel Estelloso and 11 students (six boys and five girls) in City Heights Subd.

Department of Education (Philippines) DepED achievers in Division, Regional, National Schools Press Conferences, Golden Pen Awards & Panay News Writing Competition.

Victory at NSPC by Sofia Isabelle Ortiz Grade 6-Batch 2008 Team JJS/Castleson[2] is the home of Super Karate Kids in the country was initiated by sensei Randy Mengullo and sensei Elan Delfin,[3] Sandan and Nidan Blackbelts in karate-do who garnered medals in many karatedo championships and athletic meet of different schools and karate organizations in the Philippines.

[7] JJS/Castleson adapt Shotokan and Wado-ryu styles, member of Philippine Karatedo Federation the governing body of sport karate in the country.

[8][9][10][11] Castleson High is a member of Negros Occidental Private Schools Sports Cultural Educational Association (NOPSSCEA), where it fields team in many events.