Hi again

as you are in Australia, it is hard to give advice re school as the system there may be different.

I hope Lara will pop in soon as she is also in Oz

here is in the USA, Tourette Syndrome is classified under the Americans with Disabilities Act as "other health impaired" and so legally eligible for special accommodations etc in the education system

My son had what is known as a 504 plan throughout school which was of great benefit.
here is the link to the TSA association's website section on education which may be helpful to you in giving ideas, even though it may not carry the same weight over there as here
http://tsa-usa.org/educ_advoc/education_main.htm