According to the search results, the age for 2nd grade varies depending on the country and educational system. However, in most countries, children in second grade are usually aged 7-8. Here are some examples of age ranges for 2nd grade in different countries:

• Australia: Year 2, children generally start this level between the ages of seven and eight.
• Brazil: segundo ano do Ensino Fundamental I, the minimum age required to enter second grade is 7 years (84 months) .
• Italy: second grade corresponds to the second class of primary school (seconda classe della scuola primaria) .
• Philippines: Grade 2 (Baitang Dalawa) is the second year of Primary Level and Elementary School curriculum. Students are usually 7-8 years old.
• United States: In most US states, the age of second grade is set at a maximum of eight years old. Children who are older and in second grade were not necessarily held back, but might have had their birthday at a part of the year that places them older and in the same grade.

Its important to note that these age ranges are not universal and may vary depending on the educational system and country.