<p>this is the principle behind no cad/draft work/photoshop things in portfolio. </p>
<p>They want to teach you how to draft and use those things. You will have lectures on these and they are not necessary skills to have yet. In fact, they might want you to do things in a totally different system. </p>
<p>Additionally, portfolios are meant to demonstrate you creative ability and also ability to think three dimensionally and convey 3D things in a 2D medium. this is why they really like still-life draws. architects will have to have the ability to express 3D concepts using 2D, and this is so easy to teach. While some places have classes on drawing and watercolor, other schools do not, so there is less time to teach you this.</p>