In the United States, the term "grammar school" typically refers to a primary or elementary school, which provides education to children from kindergarten through to the fifth or sixth grade. However, it is worth noting that the use of the term "grammar school" differs between various regions of the U.S, with some parts of the country using the term exclusively for middle or high schools with rigorous academic programs.
While the term "grammar school" is not uncommon in the U.S, it is not an official name for any type of school. Instead, different states have their own names for primary schools, such as elementary school, primary school, or grade school. This can cause confusion for those looking for a specific type of school, especially if they are new to the American education system.
That being said, there are a variety of types of schools in the U.S. that may have a focus on rigorous academic programs, including selective enrollment schools, magnet schools, and private schools. These schools typically require an application process to gain admission, and often have specialized programs focused on a range of subjects, such as science and technology, arts, or language. Some of these schools may also have entrance exams or require high test scores for admission.
In summary, while the term "grammar school" may be used in some parts of the U.S, it is not an official designation for any specific type of school. Instead, primary schools in the U.S. have various names depending on the region. However, there are a variety of schools across the country that offer rigorous academic programs and specialized areas of focus for students.