The term TEST SITE can be broken down into two crossword solutions: LAB (3 letters) and SCHOOLROOM (10 letters). A LAB is a room or building that is used for scientific research, experimentation, or teaching. It is typically equipped with specialized equipment and materials for conducting experiments and tests. A schoolroom is a room in a school where classes are held. It is usually equipped with desks, chairs, and other furniture for students to use while learning.