Not in my wifes experience as a elementary school teacher.
The kid may be able to understand English and speak it, but it is not clear and in many cases not understandable.
And how elses explain why forms and telephone trees are in Spanish, and my bank a few months ago had nothing but Spanish signs in the lobby, and voting signs are in Spanish but you must master English to become a citizen and vote.
And at Kelly AFB in San Antonio I personally saw in this huge office three generations of the same family plugging in numbers and they could not speak English worth a darn. This office had a Hispanic male in charge that spoke English and would translate into Spanish for them and spoke to them in only Spanish.
Meant to include you in my #111
That is a very common situation at that base. Some how certain TexMex families can get numerous relatives placed on the payroll generation after generation. I am convinced that a number who are hired initially as low grade wage grade employees are illegals. The increaseing number TexMex shop and office supervisors makes effective confrontation of the situation almost impossible.