Mometrix eLibrary delivers the most comprehensive list of study guides and practice questions on the market, all at your fingertips. Students can access these study materials anywhere, anytime they have an internet connection. Mometrix delivers the most comprehensive, most effective collection of study guides and practice questions on the market, all in one place. Mometrix has developed and fine-tuned study materials for over 1800 different standardized exams including the National Counselor Exam.