As my daughter´s languages developed so did her pronunciation although there were certain sounds she stumbled over,such as the -r in both majority and minority languages. When she was younger, she´d often pronounce the /-r /as a /-l/ sound therefore "Granny" became "Glanny" etc and even when she had learnt to pronounce the /-r/ sound in English,she still had the problem of rolling her r´s in Spanish.This is however a common problem and even Spanish monolingual kids have problems mastering this sound so we weren´t too worried about it although her previous teacher had mentioned that she might need to see a speech therapist. Fast track to this year, when by now at age 5-6 Spanish monolingual children should be able to pronounce all the sounds including the tricky rolling -r and although my daughter can actually roll her r´s, her current teacher has picked her up on her pronounciation of certain phonemes or sounds,particularly her /-s/´s and advised us to send her to a speech therapist to straighten out her pronunciation. This is because they will start to do dictations next year when they start primary and might affect how she spells words. We were surprised as we hadn´t noticed that she didn´t pronounce some sounds correctly although I had noticed that occasionally she would say things like "gromitar" instead of "vomitar" but I thought this was down to mishearing the word rather than mispronunciation and I usually leave Spanish correction to my husband. I´d go so far as to say her pronunciation in English is near perfect!!
Now we take her twice a week for 1/2 hour sessions before her ballet class to the speech therapist, who works in the school. This can be quite expensive but is also available through the public health care system.This however makes our Mondays and Wednesdays very hectic and it´s difficult to squeeze in English reading or homework.During the first session. I think the speech therapist just asked lots of questions and observed my daughter to find out which sounds she was having trouble with and in the follow-up sessions they have been practising the -s sounds. Usually the parents wait outside while the children are having their session so I don´t really know what they do but I know that they´ve taught her how to position her tongue and lips/mouth when pronouncing the /s/.She also brings home "worksheets" with pictures of things beginning with -s that she has to practice saying and a Ludo type game with lots of pictures of things beginning with -s. She´s only had 4 sessions and they are saying that she can pronoun the sound and only has to practice it now so hopefully she shouldn´t have to go much longer. I´m not worried about it and nor do I think that it has anything to do with her being bilingual as many of her monolingual Spanish classmates are also going to the speech therapist. I´m inclined to think it´s more to do with her having a dummy when she was little and when she first started speaking, she was talking with the dummy in her mouth...however being bilingual could also play a small part in it. Have you had to visit a speech therapist with your bilingual child? What have your experiences been?