I should probably have realized that most of the TSR population doesn't know how the Scottish system works.
A little explanation: On the face of it, they are quite similar. After Standard Grades(GCSEs) in 4th year, you go into 5th year where you typically do 5 subjects. English and Maths are strongly advised to be taken here and its tends to be school policy to do so. If a student is not capable of passing a higher then they would normally drop down to intermediate 2 level with a view to doing the higher in 6th year. AAAA at higher will give you an unconditional to about anything in scotland (not medicine, dentistry or vet school and maybe a few certain very popular other subjects)
In 6th year, up to 3 advanced highers are normally taken for people hoping to go to university. These tend to cover similar material to A-level but all include a large investigation/dissertation which counts for about 20-40% of your overall grade (apart from maths, thats completely based on a 3 hour exam.) The opportunity to take more highers this year exists too. While most english universities ask for atleast AAB at advanced higher, most students don't take 3 and of those who do very few will achieve this. Hope this makes things slightly clearer. Also, a side note, all the courses are typically 1 year long with an exam in May/June rather than the more modular system at A-level.