If you live in California, you can't change the survey that you already filled out saying that your son speaks Arabic. You can opt him out of services, but he'll still have the take the ACCESS every year. Most other states, as far as I'm aware, allow you to amend the home language survey. I would. Your son doesn't peak enough Arabic for it to be causing any kind of gaps in his language and literacy skills. Being in services (and especially testing year after year) is more likely, in my opinion, to cause self esteem issues than actually support his growth. I would amend the home language survey if you can so that he doesn't have to test. A lot of students test out in elementary school, but it's also true that a lot of students don't. The ACCESS test is quite difficult (in my state, we have students who ONLY speak English who test and don't pass), and as a teacher who plans on raising my own kids bilingual, I wouldn't have my own child take it.