Sixth grade (also 6th grade or grade 6) is the sixth year of formal or compulsory education. Students in sixth grade are usually 11-12 years old. It is commonly the first grade of middle school or the last grade of elementary school, and the seventh school year since kindergarten.

In Afghanistan, Grade 6 is the first year of middle school. Students are aged 11–12. Also known as year 6.

In Australia, this level of class is called Year 6. Children generally start this level between the ages of eleven and twelve. Grade 6 is generally the last grade for primary schools in Australia.

In Brazil, grade 6 (6º Ano or 6ª Série) is the first year of middle school. It is the sexto ano do Ensino Fundamental II.

In Canada, the equivalent is Grade 6.

In France, the equivalent of sixth grade is Sixième and is the first year of Collège (middle school). Students are 11-12 years old.

In Germany, where the different federal states have different educational systems, Grade 6 (6. Klasse) is either the final year of primary school or the second year of secondary school. therefore, the sixth grade in Germany is not highschool

In Israel, Grade 6 (called Kita Vav) is the final year of elementary school(except for the cities Lod, Givatayim and Ramat Gan).