The number of years your studies take is under your own control. The recommended time to complete the high school curriculum is 2 – 4 years. If you plan to complete your studies in 3 years, you will need to take 3 – 4 courses per term.
Pay attention to your own life situation and be careful that your course load doesn’t become too heavy. On the other hand, long breaks in studying are not good for improving and maintaining language skills – languages must be studied regularly and on an ongoing basis.