The phrase "home language" refers to the language that a person learns and speaks at home with their family. It is the language they are most comfortable with and use most frequently in their daily life. Full definition
State officials appear on track for developing a new test by 2015 - 16 for identifying students whose home language is not English and who need help improving their language skills. (k-12daily.org)
We have between 20 - 35 home languages spoken among our students. (wida.us)
Public schools do not discriminate based on the language needs or preferred home language of students. (myschooldc.org)