- In Singapore, First Grade or more commonly known as Primary 1 begins when a child is 7 years old.
- In Bahrain, the minimum age for the first grade is 7 years old.
- In Sri Lanka, children enter Class 1 or 2 when they are 6 or 7 years old.
- In Malaysia's education system, First Grade or most commonly known as Standard or Year 1 begins at the age of seven.
- In India, Children Start school at age 5.
- In Iran, Children Start school at age 7.
- In Belgium, children aged 6 to 7 years old enter to la première année d'enseignement primaire (first year of elementary education).
- In Bulgaria, the minimum age for the first grade is 6 years old.
- In Finland, children are aged 6 to 7 years in the beginning of this grade.
- In France, first grade would correspond to cours préparatoire (preparatory course), more commonly called C.P.
- In Germany, it would correspond to 1. Klasse (literal translation: first class).
- In Greece, children are 6 years old.
- In Ireland, the equivalent is known as First Class or Rang a haon. Students are usually 6-7years old, as it is the 3rd year of primary school.
- In Poland children enter the 1st year of school (klasa 1) aged seven (since 2012 to 2016 the age was six, earlier also seven).
- In Portugal, children enter the 1st year of school (1º ano) aged five or six.
- In Sweden, children are 7 years old.
- In Spain, children are 5 years old when they enter the 1st year of school (Primer curso).
- In the Netherlands, first grade corresponds to Group 3, the third year of primary education.
- In Russia, children are 6 to 7 years old.
- In Ukraine, children are 7 years old.
In England, the first year of school is called reception, and the pupils are 4 to 5 years old. However, the first compulsory school year is Year One, when children are 5 years old. As most primary schools have a reception class which is treated like a compulsory school year, i.e. the children wear uniform and have the same school hours, most children start school in reception. The first grade is the equivalent of Year Two.
Scottish and Welsh pupils usually enter the corresponding stage one year younger. In Northern Ireland they are two years younger. In Scotland, first grade is equivalent to Primary 3. Pupils in Primary 3 are 7 to 8 years old. America call their primary education grade school where in Scotland they call it primary school as it would be primary 1 would start after Kindergarten (nursery) and you would be age 4 to 5 years of age. then it would be primary 2 the next year and so on up until primary 7 which would be your last year at primary school then you go off to high school.
In mathematics, students may learn about addition and subtraction of natural numbers, usually with only one digit, and about measurement. Basic geometry and graphing may be introduced. Clock and calendar time as well as money may also be in the curriculum.
In language, first graders are taught the fundamentals of literacy, including reading sentences, writing very simple statements and mastery of the alphabet, building on what the students have learned in kindergarten or other forms of pre-school (although because first grade is the first compulsory level of education in many U.S. states, the level of literacy in incoming students can vary widely). The expectations for first grade have changed due to the Common Core Standards. Curriculum is typically based on state standards developed by educators in each state. Most states use the Common Core Standards, so most schools across the country are using similar curricula. First graders are now expected to read and comprehend stories ranging in lengths and difficulty. They are also expected to show an improving fluency rate during the school year with ability to easily read stories by the end of the year.
Students are also typically introduced to the concept of social studies with an emphasis on establishing ideas of history or civics in either a personal or larger sense. Some states focus on the basics of US history and patriotism is taught, with a focus on the founding fathers and the time period surrounding the American Revolution; other states require a social studies focus on family relationships in first grade, leaving community, state, and nation studies to higher grades. Basic geography is also taught in the first grade. Focus on the school's municipal area and culture, along with basic state geography, may also be focused upon in first grade in some states. First grade science usually involves the discussion of matter, plant and animal science, earth materials, and balance and motion, along with the human body, and basic health and nutrition.
Science as inquiry is taught and practiced in first grade. Students are encouraged to observe the world around them and begin asking questions about things they notice. As they become more comfortable investigating the world around them, students will also begin asking better questions and making better, more advanced predictions.
- In New Zealand, this level of class is called "Year 2." Children generally start this level when they are 6 to 7 years old.
"Year 1" generally begins if the child is received into a school on their 5th birthday when they turn such in the first few months of the year. If they are already 5 at the beginning of Year 1, they will most likely have had their 5th birthday in the latter part of the previous year, and have come up from "New Entrant" level.
- In Brazil, the minimum age for the first grade was changed from 7 to 6 years old.
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