They may be required to confer with others, including directors or other actors, to correctly display the right emotions, gestures and facial expressions. However, most professional actresses have participated in acting conservatories or college drama courses. A bachelor’s degree program in theater or drama can provide access to courses like acting theory, stage management, voice and diction, and stagecraft that can be useful to aspiring actresses. Through these programs, students can explore a variety of fields, such as impromptu acting, voiceover work, musical theory and sketch comedy, to expand their portfolios.