One of the best ways to impress the commission is successful scientific work while still in school. In fact, participation in scientific conferences is very possible for any motivated student. But it is worth remembering that often an application for a decent-level conference is required six months or a year before the conference itself, and the first portfolio is submitted to the university almost a year before admission. Therefore, if your child has dreams of studying in the US, you should start preparing a portfolio as early as possible!