The most able candidates in S5 typically take five Higher subjects, and matriculation requirements for courses are specified from a range from CC to AAAAA depending on the course and university. UK universities outwith Scotland may require students to study to Advanced Higher level, given that the Higher is equivalent to AS-level on the UCAS tariff. As Scottish university courses traditionally have a duration of 4 years, the loss of one year's schooling is compensated by an additional university year. The flexibility of the [National Qualifications] framework means that candidates may take a mixture of Higher courses and Intermediate 2 courses in S5, with a view to studying the Higher equivalent in S6, thus gaining university qualifications across two years. This system maximises the opportunities available to candidates of differing abilities.