Final answer:
While an exact percentage of students with disabilities who do not use English as their primary language at home is not provided, it can be inferred that a similar trend to the 19.6% of all Americans who speak another language at home might exist in this demographic.
Step-by-step explanation:
The question pertains to the percentage of students with disabilities who do not use English as their primary language at home. From the information presented, it is clear that a significant number of students in the United States speak a language other than English at home. In the context of students with disabilities, the provided information does not specify an exact percentage of this group that speaks another language at home. However, it is known that bilingual education can help in the academic achievement of non-English speakers and that there are disparities in the graduation rates among students with disabilities, with students from low-income areas having even less access to educational services, including language support.
Regarding the general population, about 19.6% of all Americans over age five speak a language other than English at home. If students with disabilities reflect similar trends as the general population, then it may be inferred that a comparable percentage might also speak other languages at home. Furthermore, it notes that only 3% of Hispanic children had access to bilingual programs during the 1980s, which could suggest an overlap with the group of students with disabilities who may also need these services but do not access them due to limited funds and support for such programs.