List of Regional Science High School Union (RSHS) campuses:

Luzon

• Regional Science High School for Region 1 – Ilocos Region
• Regional Science High School for Region 2 – Cagayan Valley
• Cordillera Regional Science High School
• Regional Science High School III – Central Luzon
• Cavite Science Integrated School – CALABARZON
• MIMAROPA Regional Science High School
• Bicol Regional Science High School
• Quezon City Science High School – Metro Manila

Visayas

• Regional Science High School for Region VI – Western Visayas
• Dumaguete Science High School – Central Visayas
• Regional Science High School for Eastern Visayas

Mindanao

• Regional Science High School for Region IX – Zamboanga Peninsula
• Gusa Regional Science High School – Northern Mindanao
• Davao Oriental Regional Science High School
• Regional Science High School for Region 12 – Soccsksargen
• Caraga Regional Science High School
• ARMM Regional Science High School