Between you and me = right; Between you and I = wrong

This is another one of those lovely true 100% of the time rules they pop up so infrequently on the SAT that you really do appreciate them when they appear. Even better, this is a rule that the College Board tests pretty often, so theres a decent chance youll come across it in any given Error-ID section. And if you do happen to encounter it, its an easy point. You dont even have to think about the other options. Heres why: Between is a preposition, and prepositions are always followed by object (rather than subject) pronouns. Subject Pronouns I You She/He/It We You They Object Pronouns Me You Her/Him/It Us You Them Since the you forms are identical in subject and object form, SAT does not test them. Most often, it tests the first person singular (I vs. Me) or third person singular (he vs. him). Subject pronouns are used as subjects, while object pronouns can be used as objects (I know, big shock there). To give an obvious example, you would say, I went to the store, not me went to the store because I is a subject pronoun; however, you would say I see her, not I see she because her is an object pronoun. Likewise, youd say This book is for her, not This book is for she. Thus, you would always say between you and me (preposition + object pronoun + object) pronoun, NOT between you and I (preposition + object pronoun + subject pronoun).