DepEd Tayo- Gregorio Manalo Sr. Mangyan High School- Happy Valley Annex
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Gregorio Manalo Sr. Mangyan High School - Happy Valley Annex is a public secondary school located at Happy Valley, Socorro, Oriental Mindoro.
Address
Happy Valley
Socorro
5207
Opening Hours
| Monday | 8am - 4pm |
| Tuesday | 8am - 4pm |
| Wednesday | 8am - 4pm |
| Thursday | 8am - 4pm |
| Friday | 8am - 4pm |
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