According to history, the natives or Negritoes were the first inhabitants to this place. Diora-Zinungan was named from the two persons who were used to call Ungan and a beautiful lady named Dora. Their friendships turned into courtship that made them sweet couple and were blessed with many siblings. So many years had gone, The Rabanals’ clan from Ballesteros, Cagayan migrated in this place in the year 1935.They were attracted with the natural beauty especially Zinungan is a place near the sea of which the people can go fishing for their consumption.

The first occupants to this place were the following;

1. Delfin Rabanal Sr.

2. Patrocenio Rabanal Sr.

3. Paulo Perucho

4. Angel Agron

5. Emiliano Consolacion

6. Enriquita Agron

7. Federico Pascual

8. Santos Costales

9. Alejandrino Tabilisima

10. Felix Tabilisima

11. Benito Mamotos

12. Victorino Bello

13. Benito Bello

14.VenerandoRecolizado                                                                                                                

15. Jose Arquero

16. Vicente Tejano Sr.

17. Emilio Castro Sr.

18. Amador Agron and the clan of Manuel Nibre Palarca

19. Camilo Diza

20. Macario Ramirez

21. Tony Dollente and the clan of Pascual Rabanal

    As time goes by many people from nearby municipalities came and settled here to plant pine apple. Some of them did not stayed here permanently and they get back home in their places.

    Life in this place is not so easy. Most of the time the people here need to go to the mountain in order to plant a variety of vegetables and root crops. Different kinds of animals were had been raised like carabaos, goats, chickens and hogs. As time pass by children grew in number and so they decided to put up or open a school through the initiative of the barangay officials headed by the barangay captain Mr. Venerando Recolizado by asking permission to the Ministry of Education Sta. Ana District Division of Cagayan under the batoon of the versatile Schools District Supervisor Mrs. Judith Tuvera.

   The dynamic leadership of the barangay Officials and the different stakeholders of Diora-Zinungan manifest a good and successful plan of which 20 Grade I pupils got enrolled on the first Monday of June 1967.Mrs. Leticia O. Lomo was the first hired classroom teacher adviser in this place in 1967.She was a native of Tuguegarao Cagayan. The teacher herself stayed in the house of Mrs. Victorina Tejano because their house is the nearest in school. The next teacher who succeeded her was Mam Caridad L. Galamgam a resident from this place. She spent most of her time in teaching multi-grade eventhough how hard the situation is she never give up because she believed that teaching is a noble calling that every teacher should embrace and accept no matter what.

The following teachers were assigned;

    Mrs.Francisca R. Udarbe,Miss Estelita Jara,Miss Fe Simbe,Mr. Valentin Agustin,Mrs. Arizabal,Mrs. Helen U. Savella, Mrs.Florfina Alcaraz,Mrs.Marilyn Magauay,Mrs. Flor Recolizado,Mrs. Leila Lorenzo,Mrs.Soledad Castaneda,Mrs. Edralyn Quinte,Mrs. Emelita Alibania,Mrs.MaryGrace Gorospe,Mrs.Claribel Fonacier,Mrs. Merlyn Aspili,Mrs.Remy Lappay,Mrs.Maruna Verazon,Mr. Renante Pascual,Miss Joan Berbano,Mrs.Marivic Medrano,Miss Mary Grace Arellano,Miss Nechie Grace Pantinople,Mrs Madelyn Gudoy,Mrs. Jenny Mae M. Castillo,Mrs Emmalyn Macanlalay,Mr.Nehemias Abuyuan,Miss Rose Ann Gansain,Mrs.Maryjane Pula,Mrs. Marites Mallanao,Mrs. Jollibee Bautista,Mrs. Concepcion Dimaya,Mrs.Hermilyn Quindica,Mrs.Milagros Agullana, Mrs. Miriam A. Cariño, Mrs. Maria Libertine O. Fronda,Mrs. Flordeliza N. Picardal, Mrs. Gerlie S. Calano, Mrs. Elma D. Agresor, Mr. Sylvan Q. Alcantara Head Teacher 3,Mrs. Elma Alog, Head Teacher I,    Mr. Emilio H. Maramag, Jr. Head Teacher I, Ms. Mia Mae A. Aragon, Teacher I and Mrs. Eliza Anne R. Villanueva, Administrative Officer II.

The Following are District Supervisors;

  Mrs. Rosita Curammeng, Mr. Pedro T. Aurelio,Mrs. Vicenta Q. Alcantara, Mrs.Estrella P. dela Cruz,Mrs. Flor V. Loreto,Mrs. FE A. Datul,Mrs. Marciana B. Agustin, Mr.Cesar Acebedo, Mr. Rody U. Balao, Mrs.Eden P. Malabag, Mrs.Myrna P. Agcaoili, Mrs.Lorenza Cabalza,Mrs. Raquel C. Marantan,Maribel S. Arellano and the newly assigned PSDS Mr. Mario S. Ascueta.