读下面的文章，然后用英语写一篇不超过160字的摘要。Education in Britain and the USA In Britain，all children have to go to school between the ages of 5 and 1 6．In America，children must go to school from the age of 6 to between the ages of 14 and 16，depending on the state they live in． In England and Wales，the subjects taught in schools are laid down by the National Curriculure，which was introduced in 1 988 and sets out in detail the subjects that children should study and the levels of achievement they should reach by the ages of 7，1 1，14 and 16，when they are tested．The National Curriculum does not apply in Scotland，where each school decides what sub iects it will teach． In America，the subjects taught are decided by the national and local governments．Whereas British schools usually have prayers and religious instruction，American schools are not allowed to include prayers or to teach particular religious beliefs． At 16．students in England and Wales take GCSE examinations．These examinations are taken by students of all levels of ability in any of a range of subjects and may involve a final examination，an assessment of work done during the two—year course，or both of these things．At 18，some students take A—level examination，usually in not more than 3 subjects．It is necessary to have A—levels in order to go to a university or polytechnic． In Scotland，students take the SCE examinations．A year later，they can take examinations called HIGHERS，after which they can either go straight to a university or spend a further year at school and take the Certificate of Sixth Year Studies．In Scotland，the university system is different to that in England and Wales．Courses usually last four years rather than three and students study a larger number of subjects as part of their degree． In America，school examinations are not as important as they are in Britain．Students in high schools do have exams at the end of their last two years，but these final exams are considered along with the work that the students have done during the school years． In American high schools，there is a formal ceremony for Graduation．Students wear a specialcap and gown and receive a diploma from the head of the school．Students often buy a class ring to wear，and a yearbook，containing pictures of their friends and teachers．There are also special social events at American schools．Sports events are popular，and cheer leaders lead the school in supporting the school team and sing the school song．At the end of their junior year，at age 17 or 1 8 students hold parties in the evening．The girls wear long evening dresses and the boys wear tuxedos．In Britain．there are no formal dances or social occasions associated with sch00l lire．Some schools have SPEECH DAY at the end of the school year when prizes are given to the best students and speeches are made by the head teacher and sometimes an invited guest．However，in many British schools，students and teachers organize informal dances for the older students．