Sorry, there is no way to accurately test your IQ without it being given by a licensed professional, in a controlled environment. Portions of a true IQ test require verbal questions and answers, and moving puzzles that require you to manipulate objects in real space. The scoring also can be subjective, so it needs to be done by someone who knows how to interpret your answers. I don’t know of any schools that give out full IQ tests to their students, it would be very time-consuming and expensive, and be of questionable value.
If you are interested in doing one, you need to get in touch with someone who is licensed (usually a psychologist) and expect to pay (several hundred dollars?) for it. I don’t know how many psychologists will give IQ tests to people who randomly ask for one, though (as opposed to needing one for evaluation as their patient or some such thing.) I got one becuse my friend was in grad school and as part of her training to give IQ tests, she had to actually administer one. (She wasn’t supposed to tell me the results, though, so getting one from a student probably wouldn’t work).