Casimiro A. Ynares Sr. Memorial National High School (also known as CAYSMNHS) is a public high school in Taytay, Rizal. situated at the Rizal Provincial Lot Hilltop, Cabrera Road, KayTikling, Barangay Dolores, Taytay, Rizal. Its mother school is Taytay National High School. The school is now an independent public secondary school. It offers specialized curriculum specifically in English, Science, Mathematics, and ICT. The school is currently rolling out the new K-12 BEC program for students starting the school year 2012-2013. The school also has been planned to carry out the new SHS program that will start on the school year 2016-2017 but out of all 3 choices for the new program, they will be implementing the Academics area of the curriculum.