The age of a child with respect to class may vary depending on the education system and country. However, here is a general guideline for the age of children in each class level in most countries:
Playgroup/Nursery: Usually, children aged 2 to 3 years attend playgroup or nursery school. These classes focus on developing basic social, emotional, and motor skills.
Pre-Kindergarten/Pre-School: Children aged 3 to 4 years attend pre-kindergarten or preschool classes. These classes focus on preparing children for kindergarten by teaching basic academic and social skills.
Kindergarten: Children aged 4 to 5 years attend kindergarten classes. Kindergarten focuses on teaching basic academic skills, such as counting, letter recognition, and simple math.
Grade 1: Children aged 5 to 6 years attend grade 1. This is the first year of formal schooling and focuses on building reading, writing, and math skills.
Grade 2: Children aged 6 to 7 years attend grade 2. This grade builds on the skills learned in grade 1 and focuses on developing more advanced reading, writing, and math skills.
Grade 3: Children aged 7 to 8 years attend grade 3. This grade focuses on building on the skills learned in grade 2 and developing critical thinking and problem-solving skills.
Grade 4: Children aged 8 to 9 years attend grade 4. This grade focuses on developing more advanced academic skills, such as writing and research skills.
Grade 5: Children aged 9 to 10 years attend grade 5. This grade focuses on preparing children for middle school by building on the skills learned in previous grades and introducing more complex academic concepts.
Please note that these age ranges may vary slightly depending on the education system and country.