In the United States first graders are 6 or 7 years old. Students will often start first grade at 6 years of age and complete it at 7 or turn 7 during the summer months when school is not in session. First grade is considered elementary school and in is the first year of elementary school after kindergarten.
I put together a table below showing the grades and corresponding ages of students in grades kindergarten to fifth to help you out.
| Grade Level | Age |
|---|---|
| Kindergarten | 5-6 |
| 1st grade | 6-7 |
| 2nd grade | 7-8 |
| 3rd grade | 8-9 |
| 4th grade | 9-10 |
| 5th grade | 10-11 |
If you are looking for an overall idea of how old students are in second grade then you will find that information in this article I wrote.
Allen is currently teaching in a public school district near Chicago, IL in the United States. He is teaching 8th grade science at a junior high.