The Cagayan River, also known as the Río Grande de Cagayán, is the longest river and the largest river by discharge volume of water in the Philippines. It has a total length of approximately 505 kilometres (314 mi) and a drainage basin covering 27,753 square kilometres (10,715 sq mi). It is located in the Cagayan Valley region in northeastern part of Luzon Island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan.
Cagayan Valley, designated as Region II, is an administrative region in the Philippines. Located in the northeastern section of Luzon, it is composed of five Philippine provinces: Batanes, Cagayan, Isabela, Nueva Vizcaya, and Quirino. The region hosts four chartered cities: Cauayan, Ilagan, Santiago, and Tuguegarao.
Isabela, officially the Province of Isabela, is the second largest province in the Philippines in land area located in the Cagayan Valley. Its capital and the largest local government unit is the city of Ilagan. It is bordered by the provinces of Cagayan to the north, Kalinga to the northwest, Mountain Province to the central-west, Ifugao and Nueva Vizcaya to the southwest, Quirino, Aurora and the independent city of Santiago to the south, and the Philippine Sea to the east.
Ilagan, officially the City of Ilagan, is a component city and capital of the province of Isabela, Philippines. According to the 2020 census, it has a population of 158,218 people making it the most populous city in the province and the second most-populous in Cagayan Valley after Tuguegarao. As of 2022, it also had the most number of voters in the province with 101,050 electorates.
Cauayan, officially the City of Cauayan, is a 3rd class component city in the province of Isabela, Philippines. According to the 2020 census, it has a population of 143,403 people.
Santiago, officially the City of Santiago, is an independent component city in the Cagayan Valley region of the Philippines. According to the 2020 census, it has a population of 148,580 people.
Gamu, officially the Municipality of Gamu, is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 30,655 people.
Jones, officially the Municipality of Jones, is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 45,628 people.
Mallig, officially the Municipality of Mallig, is a landlocked municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 32,208 people.
Roxas, officially the Municipality of Roxas, is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 65,839 people.
San Mariano, officially the Municipality of San Mariano; Ilocano: Ili ti San Mariano; Tagalog: Bayan ng San Mariano), is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 60,124 people.
Tumauini, officially the Municipality of Tumauini, is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 70,743 people.
Cagayan National High School, abbreviated as CNHS and locally known as Cagayan High, is the universal high school of Region 2. It is located in Taft Street, Tuguegarao City, Cagayan, Philippines. Established in 1905, it is the oldest public secondary level school in Cagayan and the province's premier secondary school.
Digos City National High School (DiCNHS), formerly known as Davao del Sur National High School, is situated at Rizal Avenue, Zone II, Digos, is one of the biggest schools in Davao Region, under the jurisdiction of the DepEd Division of Digos. Digos City National High School is also once the second largest secondary school in the country in terms of student population, second only to Rizal National High School in Pasig. Founded in August 1946 with the name of Digos Junior High school.
Parañaque National High School (abbreviated as PNHS; Filipino: Mataas na Paaralang Pambansa ng Parañaque) formerly known as Parañaque Municipal High School is a secondary public school, classified as a comprehensive national high school, whose main campus is located at Kay Talise Street and Dr. A. Santos Avenue, San Dionisio, Parañaque. Aside from the main campus in San Dionisio; the school currently has annexes in Baclaran and San Isidro. It also has nine former annexes located in Baclaran, Don Bosco, Don Galo, La Huerta, Marcelo Green, San Martin de Porres, San Antonio, Sto. Niño and Tambo; all independent from the school administration. The main campus of the school is notable for having one of the largest school populations in the Philippines and even in Asia. It was established on February 24, 1969, and made into a national high school by virtue of RA No. 7841 on July 25, 1994. The current principal of the main campus is Gerry A. Lumaban, Principal IV.
The Gaddang are an indigenous people and a linguistically identified ethnic group residing for centuries in the watershed of the Cagayan River in Northern Luzon, Philippines. Gaddang speakers were recently reported to number as many as 30,000, a number that does not include another 6,000 related Ga'dang speakers or any of several other small linguistic-groups whose vocabularies are determined to be more than 75% identical.
The Cauayan City National High School - Main is a public educational institution established in Cauayan, Isabela, Philippines. It was founded on June 3, 1997, as an extension of Cauayan Polytechnic College, now Isabela State University-Cauayan Campus.
The Isabela School of Arts and Trades or ISAT is a public secondary and vocational school established in Ilagan, Isabela, Philippines. It is an institution that provides high school education in the province with integration of Technical Education Skills Development Authority courses.
The James L. Gordon Integrated School, commonly known as "James L.", "JLGIS", and "James Gordon", is a public integrated School located at Foster St., New Kababae, Olongapo City, Zambales, Philippines.
Crossing Bayabas National High School is a public secondary school in Toril, Davao City, Davao Del Sur, Philippines, conceived on November 22, 1997, following the approval of the Republic Act No. 8388 authored by the late Congressman Elias B. Lopez.
