Studying abroad has formal education consists of at least twelve years of basic education, ordinal numbers (e.g., first grade) are used for identifying grades. Typical ages and grade groupings in contemporary, public and private schools may be found through the U.S. Department of Education. Generally there are elementary school (K-5th/6th grade), middle school (6th/7th-8th grades) and high school (9th–12th grades).[39] Some schools differ in the grades they contain.