In Northern Ireland, there is a 7th year of primary school and a 7th year of secondary school. United States The twelfth grade is the twelfth school year after kindergarten. It is also the last year of compulsory secondary education, or high school. Students are often 17–18 years old, and on rarer occasions, can be 19 years old. Twelfth graders are referred to as Seniors. Many students consider the twelfth grade, also known as the senior year of high school, a year to relax and prepare for the transition out of their old lives into college/university or the workplace. Others take advantage of the opportunity to complete additional higher-level courses, such as Advanced Placement and International Baccalaureate, to earn credits for college/university. Math courses normally include Precalculus, Trigonometry, Advanced Placement Calculus, Advanced Placement Statistics, or Probability. Science courses include Advanced Placement Chemistry, Advanced Placement Biology, Advanced Placement Environmental Science, or Advanced Placement Physics B, Advanced Placement Physics C: Mechanics, or Advanced Placement Physics C: Electricity and Magnetism. Social Studies courses include Government, Economics, Advanced Placement United States Government and Politics, Advanced Placement Comparative Government and Politics, Advanced Placement Psychology, Advanced Placement European History, Advanced Placement United States History, Advanced Placement Microeconomics, or Advanced Placement Macroeconomics. English classes include Advanced Placement English Literature and Composition, Film and Literature, Sports and Literature, or Contemporary Literature. Popular works studied include Beowulf, The Canterbury Tales, Pygmalion, The Handmaid's Tale, Frankenstein, Othello, Inferno, Goethe's Faust, Hamlet, and Brave New World, as well as works of Romantic poets such as Edgar Allan Poe, John Keats, William Wordsworth, and Emily Dickinson. Art classes include Advanced Placement Art History, Advanced Placement Studio Art, Advanced Placement Music Theory, Applied art in Theatre, Music Theory For Garage Band Musicians, IB Musical Analysis, IB Theatre Arts, Advanced Technical Theatre, Advanced Photography, Advanced Ceramics, Fashion Design and Illustration, Theatre Dance, Jazz Dance, IB Dance Studies Madrigal Singers, Jazz Singers, or Wind Ensemble. Technology classes include Advanced Placement Computer Science, Java, Advanced Web Design, and C++ Programming. Business classes include College Marketing, College Entrepreneurship, Sports and Entertainment Marketing, College Preparatory Interview Classes, and Advanced Fundamentals in Business. Wellness classes include Physical Education, Health (if not yet taken), Weightlifting, and Advanced Training in First Aid. Traditions associated with senior year In the United States and some other countries, there is a graduation event near to the end of the school year (typically in May