You would not capitalize the words college math in a sentence, unless it was the name of a book, for example.My favorite professor wrote the book, College Math, published in 1982 and now in its 12th edition.The movie, College Math, was a dud. Reviewers said the director forgot to multiply his assets.versusI found college math extra difficult because I never had high school algebra.She failed college math in every semester.versus first word of a sentenceCollege math challenged me.College math needed tutors to carry the text for the course.