The term "second grade" refers to a level or class in education, typically for students who are around 7-8 years old. It is often considered as the second year of primary school and follows first grade. In this grade level, children continue to develop their reading, writing, and arithmetic skills while also learning about other subjects such as science, social studies, and math. The curriculum in second grade typically focuses on expanding students' knowledge base and helping them become more independent learners.