What grade/year are you in?

I'm in the first grade in middle school.
I'm a first grader in middle school.
I'm in the 7th grade.
I'm a 7th grader.

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Are the answers all acceptable?
Which one is commonly used?
Can we use both 'grade' and 'year'?

In the U.S., first grade means the first grade of only elementary school. Children in first grade are 6 or 7 years old.

The last two are common responses for 7th graders. We usually use grade, rather than class for elementary and middle school students. Class is more common in high school, like freshman class, sophomore class, etc. We also often use grades in high school, like 9th grade, 10th grade, etc.

Greetings! My name is Casey Berg and I am the real American you will be meeting later this week! I am lkioong forward to answering all of your questions and I am very excited for the opportunity to meet everyone! Thank you for inviting me and see you soon!

Im a seventh grader

Yes, all the answers are acceptable, but their usage may vary depending on the region or school system.

In some countries, such as the United States, the term "grade" is commonly used to refer to levels of education, whereas in other countries, such as the United Kingdom, the term "year" is used. Therefore, saying "I'm in the first grade" would be more commonly used in the U.S., while saying "I'm in Year 1" would be more commonly used in the U.K.

In some cases, the terms "grade" and "year" can be used interchangeably, especially when referring to levels of education within the same school system. For example, both "I'm a first grader" and "I'm in Year 1" are acceptable ways to express the same idea.

It's important to note that the terminology may vary from one educational system to another, so it's always a good idea to use the terminology that is commonly used in your specific context.