• Under IDEA, the term parent means a biological parent, an adoptive parent, a foster parent who meets state requirements, a guardian, an individual acting in the place of a biological or adoptive parent including a grandparent, stepparent, or other relative with whom the child lives, an individual who is legally responsible for the child’s welfare, or a surrogate parent. The term native language when used with someone who has limited English proficiency means the language normally used by that person, and when used for people who are deaf or hard of hearing, native language is the mode of communication normally used by the person.