San Nicolas is a 4th class municipality in the province of Ilocos Norte, Philippines. San Nicolanians are famous for their traditionally-designed pots and their warm hospitality towards visitors.

San Nicolas National High School (SNNHS) is the most popular high school destination for teens living in the urban-part of the town. It has two campuses: Main and Bingao campuses.

San Nicolas has 10 public elementary schools composed of:

CENTRAL ZONE

1. San Nicolas Elementary School
2. Eladio V. Barangan Memorial Elementary School

SOUTH ZONE

1. Payas Elementary School - Brgy. 16
2. Catuguing Elementary School - Brgy. 22
3. Asuncion Elementary School - Brgy. 17
4. Bugnay Elementary School - Brgy. 21
5. Bingao Elementary School - Brgy. 18

EAST ZONE

1. Filipinas Elementary School - Brgy. 6
2. Pasion Barangan Memorial Elementary School - Brgy. 24
3. Barabar Elementary School - Brgy. 23

The town has also one private catholic school, Sta. Rosa Academy. It is one of the most oldest school in the Diocese of Laoag. It was built in 1936, founded by the late Msgr. Fidel Albano, with the generous auspices of the late Miss Rosa Valdes, Mrs. Teresa Llopis Zabala and Miss Castora Bonoan. SRA has defied the barriers of self-centered allegiance and indifferentism to Church and community and has fostered among her students a deep awareness, openness, high sensitivity and willing responsiveness to the pressing demands of the community building without sacrificing but enhancing the intellectual, moral, spiritual development of the Rosan.