Effects of the storage conditions on the stability of natural and synthetic cannabis in biological matrices for forensic toxicology analysis: An update from the literature

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 or second grade of middle school or the last grade of elementary school, and the sixth 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.^[1]

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 France, the equivalent of sixth grade is Sixième and is the first year of Collège (middle school). Students are 10-11 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.^[2]

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

In Italy, Grade 6 is the first year of secondary or middle school (called "Scuola secondaria di primo grado").^[3] Students are 11-12 years old.

In Kenya, the sixth grade is the 6th and last year of primary school in the CBC system. In the 844 system, there are 8 years in total of primary school. Students are usually 10 or 11 in this grade.

In Kuwait, Grade 6 can be the first year of middle school but it can also be the final year of elementary school (depending on the education system in place).

In Laos, Grade 6 is the first year of middle school.

In Malaysia, the equivalent is Year 6 also known as Standard 6, as the Malaysia academic year starts in January. Before 2021, students will sit for an important exam called Ujian Penilaian Sekolah Rendah (UPSR), which translates from Malay into English as "Low/Elementary School Assessment Test", before graduating from elementary education. Now students take the newly implemented exam, called Ujian Akhir Sesi Akademik (UASA), or "End of Academic Session Exam", which runs until Form 3. Standard 6 is the final primary/elementary school year before embarking into secondary /high school (Form 1). In Malaysia, primary education are commonly broken down into primary school and secondary school.

“Primaria” education, in its current form became compulsory in 2009, and runs from grade one through grade six, for students aged 6 – 12 years. The Secretariat of Public Education (SEP) officially determines primary school as a part of ‘Basic Education’, making it free of charge, with one year of mandatory pre-school education. SEP standardizes curriculum content for public and private schools, which includes Spanish, Mathematics, Natural Sciences, History, Geography, Art, and Physical Education. The National Institute for Assessment of Education monitors standards and provides quality control. Middle Education

In Peru, grade 6 is the final year of primary school.

In the Philippines, Grade 6 (Filipino: Baitang Anim) is the final year of Intermediate Level and Elementary School curriculum.

The 1945–2017 or K–10 educational system was entirely phased out upon the implementation of K–12 curriculum on Grade 6 in June 5, 2017 which completed the 9-year process of the implementation of K–12 (alongside the adding of Grade 12 into the pre-university cycle) and phaseout of the older K–10 that were started on May 20, 2008 and April 24, 2012, respectively.

Students usually in females can also start at the young age of 10.

In Portugal, grade 6 (6º ano de escolaridade) is the second year of middle school.

In Poland, grade 6 (klasa szósta) is the sixth year of primary/elementary school. Until 2017, it was the last year of primary/elementary school, and at the end of it, students took the sprawdzian szóstoklasisty, which translates into "sixth grader's exam".

In Saudi Arabia, Grade 6 is the last year of elementary school.

In Singapore, the equivalent is Year 6 also known as Primary 6. They would have to take the Primary School Leaving Examination at around September to proceed to Secondary School.

During this time, students in Primary 6 would learn Algebra and 3D Shapes, age from 12–13 years old.

In South Korea, Grade 6 is the final year of elementary school.

In Sweden, Grade 6 is the final year of middle school (mellanstadiet). Students are often 12-13 years old unless they've been promoted or held back. The following grade (Grade 7) is then the start of high school (högstadiet). Students get grades for the first time in Grade 6; once at the end of the first term/winter term (Terminsbetyg) and one at the end of the grade (Sexans betyg).

Students also get to do their second national tests, called "Nationella prov" in Sweden. These tests are done at the end of Grade 3, Grade 6 and finally Grade 9. In Grade 6, the students participate in two different parts of the tests: First oral tests during the first term and then written tests in the second. The oral test is test A, then the written tests are done on separate days and are divided into Test B, C, D and E.

These tests are done in the subjects Swedish/Swedish as secondary language, Math and English. In Grade 3 students only do one oral test in Swedish and written tests in Swedish and Math and in Grade 9 students do oral tests in the subjects Swedish, Math and English and written tests in Swedish, Math, English, Social Studies (SO) and Science (NO). Some schools also do written tests in modern languages (German, French, Spanish).^{[4][5][6][7][8]}

In Vietnam, Grade 6 is the first year of middle school.

The sixth grade is the sixth school year after kindergarten. Students are usually 11—12 years old.^[9][10][11]

It is most commonly the first year of middle school, although it can be the last year of elementary school in some school districts.

Less commonly, it can also be the last year of intermediate school or the second year of middle school.

In Uruguay, the sixth grade is the sixth and final year of primary school. Students are usually 11 to 12 years old.

• Year Six
• Educational stage
• Student

Preceded by Fifth grade

Sixth grade age 11–12

Succeeded by Seventh grade