with a school year of 190 days of teaching, beginning with the Autumn Term, but the exact timing varies between countries and counties. Local authorities set term dates which apply to all Community, Voluntary Controlled, Community Special Schools and Maintained Nursery Schools. Academies, Free schools, Voluntary Aided schools and Foundation schools are able to choose their own dates but many follow the same dates as the Local Authority. Although these schools can set their own term dates, they are still required to open for the same length of time. Independent private schools tend to set longer holidays than state schools. In England and Wales, the academic year usually runs from the first week of September of one year through to the third week of July of the following year, with the time split up into three terms. Each of these is usually divided into halves with a week-long "half-term" break between. Primary (4-11) and secondary (11–16) schools usually follow a 39-week academic year, while further (16+) and higher (18+) educational establishments often have 33 or even 36-week terms, generally with no half-term break. Oxford and Cambridge universities have shorter terms still, usually eight weeks each term. For English state schools, the year commences the first week of September with a half-term break (one week) at the end of October, and the first term ending the third week of December. After a two-week holiday, encompassing Christmas and New Year, the second term runs from early January to Easter and is of variable length to allow for the movable feast. There is a half-term break around mid-February and two weeks of the Easter holidays, before the third and final term starts, lasting until the third week of July. The half-term break is at the end of May and students with exams will often finish their studies at that break and take exams during June and July. The summer holidays last for approximately six weeks, which was for a long time thought to be in order to allow children to help with the harvest. However, as the harvest usually takes place in late September this makes little sense. The six week break was to allow the middle-classes to take longer holidays. In Scotland, the summer break is earlier because of the different day lengths and agricultural practices there. Private schools may follow different terms, and some self-governing academies follow different termly structures. England